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A car rental agency charges ​$25per day to rent a car and ​$12.95per day for a global positioning system​ (GPS). Customers are charged for their full tank of gas at ​$4.30per gallon. A car has a 19 gallon tank and a GPS. Write a rule for the total bill b as a function of the number of days d the car is rented. What is the bill for a 9 day rental?

Respuesta :

Answer:

b = $423.25

Step-by-step explanation:

cost of car rent per day = $25

Cost of GPS rent per day = $12.95

Cost of gas per gallon= $4.30

A car has 19 gallons and a GPS

The cost of gas for 19 gallons = 4.30 * 19

= $81.70

Total bill = b

Number of days = d

b = (25 + 12.95)d + 4.30*19

b = 37.95d + 81.70

When d = 9 days,

b = 37.95(9) + 81.70

b = 341.55 + 81.70

b = $423.25

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