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lorasvet [3.4K]
4 years ago
13

This scatter plot shows the association between the fat content and the calorie counts of some food items. Which equation repres

ents the line of best fit?

Mathematics
2 answers:
ad-work [718]4 years ago
7 0

Answer:

Hence, the equation that represents the line of best fit is:

y=\dfrac{160}{7}\times x+100

Hence, option: B is correct.

Step-by-step explanation:

We are given a linear correlation association between x and y as the line of best fit is a straight line.

Also it depicts a positive relationship between x and y since the points are increasing with increasing value of x.

Now the equation of line  that best represents the line of best-fit of the scatter plot i.e. which gives a best estimate of the data in the scatter plot is:

y=\dfrac{160}{7}\times x+100

Hence, option: B is correct.

stepan [7]4 years ago
6 0
Looking at this, it seems like B would be your answer. 
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Callie's Gym is a complete fitness center. Owner Callie Ducain employs various fitness trainers who are expected to staff the fr
OLga [1]

Answer:

a)Total Labor Cost = $600x + $30y.

b) Total variable cost = $3000.

c) Total labor cost last month = $6000.

d) Unit cost of labor per class = $60.

e) Total variable labor cost = $30 * 150 = $4500, Total Labor Cost = $3000 + $4500 = $7500, and Unit cost of labor per class = $7500/150 = $50.

Step-by-step explanation:

a) It is given that the labor cost includes two components: cost of trainers, which is actually their salaries, and cost of a fitness class taught. Fitness trainer costs $600 and one fitness class costs $30. Assuming there are x number of trainers and y number of classes, therefore the model can be expressed as:

Total Labor Cost = Fitness Trainer Cost * number of trainers + Fitness Class Cost * number of classes.

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b) The total variable labor cost will be the cost spent on the number of classes. Since number of classes are 100 and the cost of one class is $30, therefore:

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c) Furthermore, last month, x = 5 and y = 100. Plug these values in the total labor cost equation:

Total labor cost last month = $600(5) + $30(100).

Total labor cost last month = $3000 + $3000.

Total labor cost last month = $6000.

d) The total labor cost is $600. Number of classes are 100. Therefore:

Unit cost of labor per class = Total Labor Cost/Number of classes.

Unit cost of labor per class = $6000/100.

Unit cost of labor per class = $60.

e) If the number of classes are increases by 50%, this means that the number of classes will be 150 instead of 100. Therefore:

Total variable labor cost = $30 * 150 = $4500.

Total Labor Cost = $3000 + $4500 = $7500.

Unit cost of labor per class = $7500/150 = $50!!!

7 0
3 years ago
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