car rental agency charges ​$28 per day to rent a car and ​$14.95 per day for a global positioning system​ (GPS). Customers are charged for their full tank of gas at ​$4.30 per gallon? A car has a 16 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 7 day​ rental?

1 Answer
Lucy
Jul 23, 2018

Below

Explanation:

A car rental agency has the following payment criterion:

  • 16 gallon tank --> 4.30×16=68.8
  • a GPS --> $14.95/day
  • renting a car --> $28/day

a) If a car is rented for "d" days, then an individual must pay
b=$68.8+$14.95+28×d
b=$83.75+28d

where b is the bill and d is the number of days

b) If the car is rented for 7 days, then d=7
b=$83.75+28d
b=$83.75+28×7
b=$279.75

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