The table below shows the relationship between the number of times you get your car washed each month and your total monthly benefit from car washes. Each car wash costs $15.How many times a month should you get your car washed?

The table below shows the relationship between the number of times you get your car washed each month and your total monthly benefit from car washes. Each car wash costs $15.How many times a month should you get your car washed?

A.1

B.3

C.2

D.4

正确答案：2