# 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 Jul 23, 2018 Below #### Explanation: A car rental agency has the following payment criterion: • 16 gallon tank --> $4.30 \times 16 = 68.8$• 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+28timesd 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+28times7
b=\$279.75