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.  
What is the marginal cost of the 5^th car wash each month?

Question

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.

 
What is the marginal cost of the 5^th car wash each month?

Quizplus · Accepted Answer

Each car wash costs $15, so the marginal cost of a car wash is always $15.

The Table Below Shows the Relationship Between the Number of Times