Question

The Key Club is having a car wash to raise money. They bought $30 worth of supplies and will charge $7 for each car they wash. Write a function rule that models this situation.

Answer 1

The function rule that models the situation for the Key Club car wash is C(x) = 7x + 30, where C(x) represents the total cost and x represents the number of cars washed.

Step-by-step explanation:

The function rule that models the situation for the Key Club car wash is: C(x) = 7x + 30, where C(x) represents the total cost and x represents the number of cars washed. The $30 represents the cost of supplies, which is a one-time charge. The $7 represents the cost per car washed. By multiplying the number of cars by $7 and adding the $30 fixed cost, we can calculate the total cost for the car wash.