|Question 19Math

Question

Prompt
A family has money in an account for renting movies online. Each time the family rents a movie, the cost of the rental is withdrawn from the account, and each rental costs the same amount of money. The function gives the amount of money, in dollars, in the account after the family has rented movies. Which of the following represents the amount of money, in dollars, withdrawn from the account each time the family rents a movie?
A
3
B
21
C
D