Use the table and image to answer the question.

Question

Store 1 Football Cost
Quantity | ($) Cost
1 | 12
2 | 24
3 | 36
An illustration shows a graph labeled Football Cost. The horizontal axis is labeled Quantity and ranges from 0 to 5 in increments of 1. The vertical axis is labeled Cost and ranges from 0 to 39 in increments of 3. An upward slanting line segment connects points plotted at left parenthesis 0 comma 0 right parenthesis, left parenthesis 1 comma 9 right parenthesis, left parenthesis 2 comma 18 right parenthesis, left parenthesis 3 comma 27 right parenthesis, and left parenthesis 4 comma 36 right parenthesis.

Two stores have their footballs on sale. Which store has the better buy? What is the cost for a football at Store 1 and Store 2?

a. Store 1 has the better buy on footballs. Store 2’s football costs $12, and Store 1’s football costs $9.

b. Store 1 has the better buy on footballs. Store 2’s football costs $9, and Store 1’s football costs $3.

c. Store 2 has the better buy on footballs. Store 1’s football costs $12, and Store 2’s football costs $9.

d. Store 2 has the better buy on footballs. Store 1’s football costs $24, and Store 2’s football costs $9.

Answer 1

c. Store 2 has the better buy on footballs. Store 1’s football costs $12, and Store 2’s football costs $9.

Answer 2

y = 9x