Question

Customers of a certain credit card earn points for using the card. The table below shows the number of points earned for the amount spent.

Answer 1

Explanation:

18/2 = 9

36/4 = 9

72 / 8 = 9

each dollar spent appears to earn the same number of points

points / dollars = 9

points = 9 · dollars

dollars = points / 9

dollars = 81/9

dollars = 9