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28 July, 13:00

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?

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  1. 28 July, 14:38
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    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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