Question

the graph shows the relationship between the price of frozen yogurt and the number of ounces of frozen yogurt sold at different stores and restaurants. according to the line of best fit, about how many ounces of frozen yogurt can someone purchase for $5? cost of frozen yogurt 10 9 8 7 6 5 cost ($) 4 3 2 1 0 2 4 6 8 10 12 14 16 18 20 size (oz) 1.5 2 13 15.5

Explanation:

Step1: Identify line points

Points (8,3) and (16,6) on line.

Step2: Calculate slope

Slope $m=\frac{6-3}{16-8}=\frac{3}{8}=0.375$.

Step3: Line equation

$y=0.375x$ (y=cost, x=oz).

Step4: Solve for x when y=5

$x=\frac{5}{0.375}\approx13.33\approx13$.

Answer:

C. 13