A rental car costs $20 for a day plus $0.25 per mile. Write a function that represents the cost of the car for a single day if x represents the number of miles and f(x)represents the car rental cost.
A)f(x) = 20x + 0.25
B)f(x) = 0.25x + 20
C)f(x) = 20.25x
D)f(x) = 0.25x

Question

Quizplus · Accepted Answer

The function should represent the cost of the car for a single day, which includes a fixed fee of $20 plus an additional fee of $0.25 per mile. Therefore, the constant term should be $20 and the coefficient multiplying the variable x should be $0.25. Option A has the constant and variable terms switched, option C only has one coefficient but the fixed fee is missing, and option D only includes the cost per mile and not the fixed fee. Option B correctly represents the cost for a single day.

A Rental Car Costs $20 for a Day Plus $0