A car rental agency charges $25per day to rent a car and $12.95per day for a global positioning system (GPS). Customers are c
harged 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?
We simply have to divide the total miles that the car can travel by the total amount of gallons of gas. So, 42 miles/ (11/6 gallons) = 22.91 miles per gallon
Therefore, Sandy's car gets 22.91 miles per gallon of gas