Question

A car rental agency charges 34 $ per day to rent a car and 12.95​$ per day for a global positioning system​ (GPS). Customers are charged for their full tank of gas at ​$3.60 per gallon. A car has a 14 gallon tank and a GPS.

​a) Write a function rule for the total bill b as a function of the days d the car is rented.
​b) What is the bill for a day​ rental?
​a) Choose the correct function rule for the total bill b as a function of the days d the car is rented.
​(Type an integer or a​ decimal.)

Answer 1

The function rule for the total bill is b = 34d + 12.95d + 3.60 * 14. The bill for a day rental is $97.35.

Step-by-step explanation:

a) Function Rule:

The total bill, b, can be expressed as the sum of the rental cost, the cost of the GPS, and the cost of the gas:

b = 34d + 12.95d + 3.60 * 14

b) Bill for a day rental:

To find the bill for a day rental, substitute d = 1 into the function rule for b:

b = 34 * 1 + 12.95 * 1 + 3.60 * 14

b = 34 + 12.95 + 50.4

b = $97.35