F n is a natural number then√n is (a) always a natural number (b)always an irrational number (c)always a rational number(d) sometimes a natural number and sometimes an irrational number

Answer:

Even though 14 candies were gone there still is a very low change of getting pineapple. out of 12 candies 2 are pineapple.

Step-by-step explanation:

Answer:

A. 93%

Step-by-step explanation:

Two years ago, Arthur gave each of his five children 20 percent of his fortune to invest in any way they saw Fit.

So each children started with 0.2A, in which A is Arthur's fortune.

Alice

In the first year, she earned a profit of 50 percent. In the second year, she earned a profit of 10%. So her part is

0.2A*(1+0.5)*(1 + 0.1) = 0.33A

Bob

In the first year he earned a profit of 50 percent. In the second year, he earned a profit of 10%. So his part is

0.2A*(1+0.5)*(1 + 0.1) = 0.33A

Carol

In the first year, she earned a profit of 50 percent. In the second year, she lost 60 percent. So

0.2A*(1+0.5)*(1-0.6) = 0.12A

Dave

In the first year, he lost 40 percent. In the second, he earned a profit of 25%. So

0.2A*(1-0.4)*(1 + 0.25) = 0.15A

Errol

Lost all the money he had. So he has 0A.

What percentage of Arthur's fortune currently remains?

This is the sum of the results of all five of his children.

0.33A + 0.33A + 0.12A + 0.15A = 0.93A

So the correct answer is:

A. 93%

Answer:

Marginal Product of Labour = 5K

Step-by-step explanation:

Marginal product of labor is the change in output when additional labor is added,

To calculate marginal product of labor you simply divide the change in total product by the change in labour.

Marginal product of labour (MPL) = Change in total products/ Change in labour

Here, change in labour = 5KL

Change in labour = L

MPL = 5KL/L

MPL = 5K

The marginal product of labor for Joe's coffee house, where the production function is q = 5KL, is found by differentiating q with respect to L, resulting in 5K, which indicates that each additional employee increases output by 5 times the number of coffee machines available.

The marginal product of labor (MP) is the additional output generated by employing one more unit of labor while holding other factors of production constant. In Joe’s coffee house, where the production function is given by q = 5KL (with q as the number of cups produced per hour, K as the number of coffee machines, and L as the number of employees), the marginal product of labor can be found by differentiating the production function with respect to labor. As capital (K) is held constant, the marginal product of labor will be calculated as follows:

MP = d(q)/d(L) = d(5KL)/d(L) = 5K

This equation indicates that the marginal product of labor is 5 times the number of coffee machines in use because K is constant in the short run. Therefore, every additional employee hired will increase the output (q) by an amount equal to 5 times the number of coffee machines that Joe has in his coffee house.

https://brainly.com/question/13031819

#SPJ3

Answer:

[tex]p_v =P(t_5>1.965)=0.0533[/tex]

We can use the following excel code to find it :"=1-T.DIST(1.965,5,TRUE) "

Step-by-step explanation:

Data given and notation  

[tex]\bar X[/tex] represent the average score for the sample  

[tex]s[/tex] represent the sample standard deviation  

[tex]n=6[/tex] sample size  

[tex]\mu_o =98.6[/tex] represent the value that we want to test  

[tex]\alpha[/tex] represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

[tex]p_v[/tex] represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to apply a one upper tailed test.  

What are H0 and Ha for this study?  

Null hypothesis: [tex]\mu \leq 98.6[/tex]  

Alternative hypothesis :[tex]\mu > 98.6[/tex]  

Compute the test statistic  

The statistic for this case is given by:  

[tex]t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}[/tex] (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic  

The calculated value on this case is given t=1.965

Give the appropriate conclusion for the test  

First we need to calculat ethe degrees of freedom given by:

[tex]df=n-1=6-1=5[/tex]

Since is a one side right tailed test the p value would be:  

[tex]p_v =P(t_5>1.965)=0.0533[/tex]

We can use the following excel code to find it :"=1-T.DIST(1.965,5,TRUE) "

Conclusion  

If we compare the p value and a significance level assumed [tex]\alpha=0.05[/tex] we see that [tex]p_v>\alpha[/tex] so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, so we can conclude that the true mean is not significantly higher than 98.6 at 5% of significance.  

Answer:

B

Step-by-step explanation:

radius=24/2=12

eq. of circle is

x²+y²=12²

Answer:

b. x² + y² = 12²

Step-by-step explanation:

A circle has a general equation of:

(x + h)² + (y – k)² = r²

where h and k are the center (h,k) and r is the radius.

The circle is centered at origin (0, 0), so h=0, k=0.

The diameter is 24, but we want the radius instead. So divide the diameter by 2 to get the radius. r = 24/2 = 12

Plug it into the equation

(x + h)² + (y – k)² = r²

(x + 0)² + (y – 0)² = 12²

x² + y² = 12²

Answer

Domain=[80, 100] ie. both of them inclusive.

Step-by-step explanation:

Albert has total $105.

Let the cost of a product be c.

Therefore, the total cost of a product after the delivery and all is represented by a function f(c)

f(c)=c+[tex]\frac{c}{20}[/tex]

f(c)=[tex]\frac{21c}{20}[/tex]

The domain, of the function is the no. of possible values of c that can satisfy the equation.

Now, lets check the maximum price of the product that Albert can buy.

f(c)=105

[tex]\frac{21c}{20}[/tex]=105

c=$100

As, the minimum price of a product of is $80 , the domain needs to start from here. And it will go on till $100.

Domain=[80, 100]

Answer:

At the end of 6 years, he would have paid $13985.6

Step-by-step explanation:

Initial amount taken as load is $10,000 This means that the principal

P = 10000

It was compounded annually. This means that it was cam pounded once in a year. So

n = 1

The rate at which the principal was compounded is 5.75%. So

r = 5.75/100 = 0.0575

it takes you six years to pay off the loan. So

t = 6

The formula for compound interest is

A = P(1+r/n)^nt

A = total amount of money that you would have paid back by the end of the six years. Therefore

A = 10000 (1+0.0575/1)^1×6

A = 10000(1.0575)^6 = $13985.6

Answer:

0.03

Step-by-step explanation:

Anthony can expect to pull out a blue candy 30 times in 150 draws, as each draw has a 1/5 probability of being blue, and the total number of draws is 150.

The question can be answered by calculating the expected frequency of pulling a blue candy based on the probability of drawing a blue candy from the bag. Anthony has 4 blue candies, 6 green candies, and 10 yellow candies, making a total of 20 candies in the bag. Since each draw is independent and the candies are replaced each time, the probability of drawing a blue candy is 4/20 or 1/5.

To find the expected number of times Anthony could pull out a blue candy in 150 tries, we multiply the probability by the number of trials:

Expected blue candies = (Probability of blue candy) x (Number of trials)

Expected blue candies = (1/5) x 150

Expected blue candies = 30

Therefore, Anthony can expect to pull out a blue candy 30 times in 150 draws.

Answer:

The price of each hamburger is $3

The price of each hot dogs is $2  .

Step-by-step explanation:

Given as :

The total price of 3 hamburger and 2 hot dogs = $13

The total price of 2 hamburger and 5 hot dogs = $16

Let The price of each hamburger = $x

Let The price of each hot dogs = $y

Now, According to question

3 x + 2 y = 13              .........A

2 x + 5 y = 16              .......B

Now, Solving to eq A and B

3 × (2 x + 5 y ) - 2 × (3 x + 2 y ) = 3 × 16 - 2 × 13

Or, (6 x + 15 y) - (6 x + 4 y) = 48 - 26

Or, (6 x - 6 x) + (15 y - 4 y) = 22

Or, 0 + 11 y = 22

∴  y = [tex]\dfrac{22}{11}[/tex]

i.e y = $2

so, The price of each hot dogs = y = $2

Now, Put the value of y into eq B

i.e 2 x + 5 y = 16

or, 2 x + 5 × 2 = 16

or, 2 x = 16 - 10

or, 2 x = 6

∴  x = [tex]\dfrac{6}{2}[/tex]

i.e x = $3

So, The price of each hamburger = x = $3

Hence, The price of each hamburger is $3 and  The price of each hot dogs is $2  . Answer

Answer:

It is an obtuse angle.

Step-by-step explanation:

It is not a 180° angle. Because 180° angle forms a straight line.

The given angle is an obtuse angle which means it is greater than 90° and less than 180°

Note that 90° angle is perpendicular angle(interior angles of a rectangle)

That angle can be measured using a protractor.

Answer:

Step-by-step explanation:

Tex wants to make a lawn in the front of his house. The total yards are 30 by 30 yards. This means that the total area of the lawn is

30 × 30 = 900 yards^2

he gets 20 by 10 yards. This means that the total area of what he got would be

20 × 10 = 200 yards^2

Since what he needs is 900 yards^2 and it is greater than what he got, 200 yards^2, then it won't be enough.

What he needs more would be

900 - 200 = 700 yards^2

Answer:

Step-by-step explanation:

The max and min values exist where the derivative of the function is equal to 0. So we find the derivative:

[tex]y'=9x^2+28x-11[/tex]

Setting this equal to 0 and solving for x gives you the 2 values

x = .352 and -3.464

Now we need to find where the function is increasing and decreasing.  I teach ,my students to make a table.  The interval "starts" at negative infinity and goes up to positive infinity.  So the intervals are

-∞ < x < -3.464           -3.464 < x < .352             .352 < x < ∞

Now choose any value within the interval and evaluate the derivative at that value.  I chose -5 for the first test number, 0 for the second, and 1 for the third.  Evaluating the derivative at -5 gives you a positive number, so the function is increasing from negative infinity to -3.464.  Evaluating the derivative at 0 gives you a negative number, so the function is decreasing from -3.464 to .352.  Evaluating the derivative at 1 gives you a positive number, so the function is increasing from .352 to positive infinity.  That means that there is a min at the x value of .352.  I guess we could round that to the tenths place and use .4 as our x value.  Plug .4 into the function to get the y value at the min point.

f(.4) = -48.0

So the relative min of the function is located at (.4, -48.0)

Answer:

He needs 23 containers

Step-by-step explanation:

1 container = 12 toy boxes

X container= 278 toy boxes

12x= 278

X= 278/12

X= 23 containers

Answer: 50%

Step-by-step explanation:

It is estimated that almost 50% of collisions involving a vehicle and a train were at crossings where warning devices such as lights, gates and bells were in working order. This high percentage may be as a result of malfunction of warning devices, because when warning devices malfunction they give wrong signals that could lead to accidents. It could also be as a result of violation or ignorance of traffic rules and warning signals which can also lead to collision.

The question discusses the number of accidents happening at railway crossings despite working warning systems, akin to a problematic intersection at Clay Street and Eagle Avenue that saw many accidents despite traffic rules. While specific statistics aren't given, such cases highlight the importance of adhering to traffic signals and safety measures for both drivers and pedestrians.

The question seems to be related to railroad crossing safety, specifically the effectiveness of warning devices like bells, lights, and gates. While the exact percentage is not provided, studies show that a significant proportion of vehicle-train collisions occur at crossings where these warning systems are fully functional. Like the traffic signal installed at the intersection of Clay Street and Eagle Avenue to prevent the high number of accidents, these warning devices aim to control vehicular and pedestrian traffic. Unfortunately, they may not always be heeded, and thus accidents occur.

Similar to the situation in the Clay Street and Eagle Avenue intersection, safety measures only work if they're respected. A traffic signal might reduce accidents, but only if drivers and pedestrians heed it. Unfortunately, despite railroad crossing warnings, accidents still occur, often due to negligence, recklessness, or distraction.

It emphasizes the importance of traffic rules and safety measures in our day to day life. Be it the students crossing the road or vehicles moving in traffic, the role of traffic signals and warning signs is critical. We must remember these are not there to restrict us, but to ensure everyone's safety.

https://brainly.com/question/33417376

#SPJ3

Answer:

The opportunity cost will be 3 cars

So option (d) will be correct answer

Step-by-step explanation:

The opportunity is cost is best characterized as the following best action done without, it is something we give up to gain another.

For instance the opportunity cost of going to class can be the pleasure from watching movie, or spending time with companions or something different. The opportunity  cost can be determined by isolating what you forgone by what you gain.

So opportunity cost [tex]=\frac{12}{4}=3cars[/tex]

So option (d) will be the correct answer

Final answer:

Pete's opportunity cost of producing one truck is 3 cars, which is found by dividing Pete's car production rate by his truck production rate (12 cars per hour / 4 trucks per hour).

Explanation:

Pete's opportunity cost of producing one truck can be determined by looking at the alternative production of cars he could have achieved in the same amount of time. Since Pete can produce 12 cars per hour or 4 trucks per hour, we can set up a ratio of cars to trucks based on his production abilities. To find the opportunity cost of one truck, we divide the number of cars Pete can make by the number of trucks, which is 12/4, giving us 3. Hence, Pete's opportunity cost of one truck is 3 cars. This calculation is similar to how opportunity cost is determined in examples such as the production possibility frontier, where the slope shows the trade-off between two different products.

Answer:

12 years.

Step-by-step explanation:

We have been given that the average 8 year old gets 30 questions right on an intelligence test, whereas the average 12 year old gets 50 questions right. We are asked to find the mental age of an 8 year old who gets 50 questions right.

Since the 8 year old boy gets 50 questions right and the average 12 year old also gets 50 questions right, so the mental age of 8 year old (getting 50 questions right) will be equal to the mental age of 12 years old.

Therefore, the mental age of an 8 year old who gets 50 questions right would be 12 years.

Answer:

The answer is either 9 or 12

Step-by-step explanation:

Answer:

Therefore,  the probability that at least half of them need to wait more than 10 minutes is 0.0031.

Step-by-step explanation:

The formula for the probability of an exponential distribution is:

P(x < b) = 1 - e^(b/3)

Using the complement rule, we can determine the probability of a customer having to wait more than 10 minutes, by:

p = P(x > 10)

  = 1 - P(x < 10)

  = 1 - (1 - e^(-10/10) )

  = e⁻¹

  = 0.3679

The z-score is the difference in sample size and the population mean, divided by the standard deviation:

z = (p' - p) / √[p(1 - p) / n]

  = (0.5 - 0.3679) / √[0.3679(1 - 0.3679) / 100)]

  = 2.7393

Therefore, using the probability table, you find that the corresponding probability is:

P(p' ≥ 0.5) = P(z > 2.7393)

P(p' ≥ 0.5) = 0.0031

Therefore,  the probability that at least half of them need to wait more than 10 minutes is 0.0031.

Answer: UTS is similar to UQR, second choice

The other choices refer to the same triangle but we have to have corresponding vertices in the same order.  U corresponds to itself, so has to be listed first in the similar triangle.   T corresponds to Q and S to R, so UQR is our answer.

Answer:

[tex]\frac{2\sqrt3}{3}[/tex] [tex]cm^2[/tex]

Step-by-step explanation:

Since [tex]\triangle ABC[/tex] is equilateral triangle, then [tex]\angle A = \pi /3[/tex]

So,

[tex]S_{\triangle ABC} = \frac{2 * 2 * sin(\pi /3)}{2} = \frac{2 * 2 * \sqrt{3}/2}{2} = \sqrt{3}[/tex] [tex]cm^2[/tex]

Then we need to find [tex]S_{\triangle AEF}[/tex] which can be computed by finding length_AF.

Let's call x = length_AF.

By Menelao's Theorem,

[tex]\frac{BE*x*CD}{AE*(2-x)*BD} = \frac{1*x*2}{1*(2-x)*4}  = 1[/tex]

⇒ x = 4/3 cm

Thus,

[tex]S_{\triangle AEF} = \frac{1 * x * sin(\pi /3)}{2} = \frac{1 * 4/3 * \sqrt{3}/2}{2} = 1/\sqrt{3}[/tex] [tex]cm^2[/tex]

To find the area of quadrilateral [tex]BEFC[/tex], we have to subtract [tex]S_{\triangle AEF}[/tex] from [tex]S_{\triangle ABC}[/tex]

Hence,

[tex]S_{BEFC} = S_{\triangle ABC} - S_{\triangle AEF} = \sqrt3 -1/\sqrt3 = \frac{2\sqrt3}{3}[/tex] [tex]cm^2[/tex]

Answer:

Step-by-step explanation:

6 flights from  New York to Denver

7 flights from Denver to San Francisco.

total number of combination

6*7= 42

Final answer:

For a trip from New York to San Francisco via Denver, with six airlines on the first segment and seven on the second segment, there are 42 different pairs of airlines that can be chosen.

Explanation:

The question asks how many different pairs of airlines can be chosen for a trip from New York to San Francisco via Denver, considering one airline for the leg from New York to Denver and another airline for the continuation from Denver to San Francisco. Since there are six different airlines that fly from New York to Denver and seven that fly from Denver to San Francisco, the total number of combinations of airlines for both segments of the journey is a simple multiplication of the two separate choices. Therefore, the number of unique airline pairs is 6 airlines from New York to Denver multiplied by 7 airlines from Denver to San Francisco.

To calculate this, we use the formula for the number of combinations for two independent choices, which is:

Total combinations = (Choices for first segment) × (Choices for second segment)

Total combinations = 6 × 7 = 42 different pairs of airlines.

Thus, a traveler could choose from 42 different combinations of airlines for their trip from New York to San Francisco via Denver.

Answer:

D) 12%

Step-by-step explanation:

The merchant marks his wares 40% more than the real price.

The merchant also allows 20% discount.

Let the real price = 100

After a 40% mark up, the price becomes

(40 /100) * 100

= 40

So we have 100 +40= 140

Discount of 20% = (20/100)* 140

= 28

The price is 140 - 28 = 112

Profit = 112 -100

= 12%

The amount of each of the 6 payments will be $41.50

Step-by-step explanation:

Given,

Cost of bike including taxes = $349

Down payment = $100

Amount left to pay = Cost of bike - Down payment

Amount left to pay = 349 - 100

Amount left to pay = $249

She agrees to pay in 6 equal payments, therefore, we will divide the total amount to pay by 6.

Amount to pay for one month = [tex]\frac{Amount\ left\ to\ pay}{No.\ of\ months}[/tex]

Amount to pay for one month = [tex]\frac{249}{6} = \$41.50[/tex]

The amount of each of the 6 payments will be $41.50

Keywords: division, subtraction

Learn more about subtraction at:

#LearnwithBrainly

Answer:

No positive value of n

Step-by-step explanation:

we have to find out for how many positive values of n are both

[tex]n^3 , 3^n[/tex] our-digit integers

Let us consider first cube

we get 4digit lowest number is 1000 and it has cube root as 10.

Thus 10 is the least integer which satisfies four digits for cube.

The highest integer is 9999 and it has cube root as 21.54

or 21 the highest integer.

Considering 3^n we get,

3^10 is having 5 digits and also 3^21

Thus there is no positive value of n which satisfy that both n cube and 3 power n are four digits.

Answer:The total cost of Loren's ticket is $352

Step-by-step explanation:

Loren is flying round trip from Dallas, Texas, to Minneapolis, Minnesota. The total fare for her ticket is $308.

Each airport charges a $16 airport fee. This means that the total airport charges would be 16 × 2 = $32

There is also a tax of $12 on the fare.

The total cost of Loren's ticket would be

308 + 32 + 12 = $352

The total cost of Loren's round-trip ticket from Dallas to Minneapolis, including the fare, airport fees, and tax, is $352.

To find the total cost of Loren's round-trip ticket from Dallas to Minneapolis, we need to add the base fare, airport fees, and the tax.

We then add these amounts together to find the total cost:

$308 (fare) + $32 (airport fees) + $12 (tax) = $352

Therefore, the total cost of Loren's ticket is $352.

Answer:

60 times will they ring together at the same second in one hour excluding the one at the end.

Step-by-step explanation:

Given : Five bells begin to ring together and they ring at intervals of 3, 6, 10, 12 and 15 seconds, respectively.

To find : How many times will they ring together at the same second in one hour excluding the one at the end?

Solution :

First we find the LCM of 3, 6, 10, 12 and 15.

2 | 3  6  10  12  15

2 | 3  3   5   6  15

3 | 3  3   5   3  15

5 | 1    1  5   1    5

  | 1    1   1   1     1

[tex]LCM(3, 6, 10, 12,15)=2\times 2\times 3\times 5[/tex]

[tex]LCM(3, 6, 10, 12,15)=60[/tex]

So, the bells will ring together after every 60 seconds i.e. 1 minutes.

i.e. in 1 minute they rand together 1 time.

We know, 1 hour = 60 minutes

So, in 60 minute they rang together 60 times.

Therefore, 60 times will they ring together at the same second in one hour excluding the one at the end.

Answer:

2/3

Step-by-step explanation:

A certain spinner is divided into 6 sectors of equal size, and the spinner is equally likely to land in any sector. Four of the 6 sectors are shaded, and the remaining sectors are not shaded.

Probability is the likelihood that an event will occur. Probability is a selection over the number of observation.

There are 4 shaded portion of the spinner and two unshaded portion.

The probability that when the spinner is spinned the portion will liand on four is simply

4/6, divided to its lowest term.

2/3

The probability that when the spinner is spined the portion will land on four is simply [tex]\frac{2}{3}[/tex].

Given information:

A certain spinner is divided into [tex]6[/tex] sectors of equal size, and the spinner is equally likely to land in any sector. Four of the [tex]6[/tex] sectors are shaded, and the remaining sectors are not shaded.

According to question,

[tex]P(E)=\frac{\rm{No\;of\;favourable\;outcomes}}{\rm{Total\;no\;of\;outcomes}}[/tex]

Four of the [tex]6[/tex] sectors are shaded, and the remaining sectors are not shaded.

There are [tex]4[/tex] shaded portion of the spinner and two unshaded portions.

[tex]P(E)=\frac{4}{6}=\frac{2}{3}[/tex]

Hence, The probability that when the spinner is spined the portion will land on four is simply [tex]\frac{2}{3}[/tex].

Learn more about Probability here:

https://brainly.com/question/10198002?referrer=searchResults

Answer:

For the given circle, the center is at (-7,4)  and radius is 7

Step-by-step explanation:

Given equation of the circle is [tex](x+7)^2+(y-4)^2=49\hfill (1)[/tex]

To find the center and radius of given circle with the help of its equation:

Equation of the circle is of the form

(x-h)^2+(y-k)^2=r^2\hfill (2)[/tex] with center at (h,k) and radius is r.

Given [tex](x+7)^2+(y-4)^2=49[/tex]

The above equation can be written as,

[tex](x-(-7))^2+(y-4)^2=7^2\hfill (3)[/tex]

Now comparing the equations (2) and (3) we get

h=-7, k=4 and r=7

Therefore center at (h,k) is (-7,4) and radius is 7

For the given circle, the center is at (-7,4)  and radius is 7

Answer:The number of minutes that Alexandra talked on her cell phone is 120

Step-by-step explanation:

A cell phone company charges a flat rate of 4.75 per month with an additional charge 0.19 per minute. Assuming the total number of minutes of call made for the month is represented by x and the total cost of x minutes of call is y, then

y = 0.19x + 4.75

To determine how many minutes that Alexandra talked on her cell phone if his monthly bill was 27.55, we would substitute y = 27.55 into the equation. It becomes

27.55 = 0.19x + 4.75

0.19x = 27.55 - 4.75 = 22.8

x = 22.8/0.19 = 120 minutes.

Answer: the sale price of the dress is $87.75

Step-by-step explanation:

Chanice and destiny went shopping at new fashion shop. Everything in the store was at a 30% discount. Chanice found a dress that was originally $65.00. This means that

the sale price would be the original price + 35% of the original price. It becomes

65 + 35/100×65

= 65 + 0.35×65

= 65 + 22.75

= 87.75

The equation of the least squares regression line (LSRL) predicting sodium level from the number of calories in beef hot dogs is Sodium Level (mg) = 37.77 mg + 4.077 mg/calories × Calories.

The equation of the least squares regression line (LSRL) predicting sodium level from the number of calories in beef hot dogs can be determined using the given statistics and the formula for the slope (b) of the LSRL:

b = r (sy/sx)

Where r is the correlation coefficient, sy is the standard deviation of the y-values (sodium levels), and sx is the standard deviation of the x-values (calories).

Given that r = 0.887, sy = 102.43 mg, and sx = 22.64 calories, we can calculate the slope (b):

b = 0.887 (102.43 mg / 22.64 calories) = 4.077 mg/calories

Then, we can use the y-intercept (a) in the equation y = a + bx, where a = y-bar - b*x-bar.

Given that the average sodium level y-bar = 401.15 mg and the average number of calories x-bar = 156.85 calories, the y-intercept (a) will be:

a = 401.15 mg - (4.077 mg/calories * 156.85 calories) = 37.77 mg

Therefore, the equation of the LSRL is:

Sodium Level (mg) = 37.77 mg + 4.077 mg/calories × Calories