Question

Suppose Lakeside Marina charges a $35 rental fee for a boat in addition to charging $15 per hour. The linear function is modeled by f(x)=15x + 35, where f(x) represents the total cost of renting the boat, and x represents the number of hours the boat was rented. What is the cost of renting the boat for 3 hours?

A.
$80

B.
$10

C.
$10

D.
$50

Answer 1

A. $80

Explanation:

Since f(x)=15x + 35, we know that x represents number or hours. By substituting x as 3 we get 15(3) + 35 = 80.