Question

Write a function rule for the total bill What would be the bill for a 7 day rental?

A car rental agency charges ​$33 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 ​$4.10 per gallon. A car has a 13 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?

Answer 1

a) `f(d) = $47.95d + $53.3`

b) `$388.95`

Explanation:

Let, Total Bill `b = f(d)`; If you take the car in rent for `d` days.

So, The Car Rent Cost = `$33 * d = $33d`

The GPS Rent Cost = `$14.95 * d = $14.95d`

The car contains a `13` gallon tank, and the cost of fuel per gallon is `$4.10`.

So, The cost for fuelling = `13 * $4.10 = $53.3`

According To The sum,

`color(white)(xx)b = $ 33d + $14.95d + $53.3 = $47.95d + $53.3`

`rArr f(d) = $47.95d + $53.3` [Got the Function]

Now The Cost For 7 days rental :-

`f(7) = $47.95 * 7 + $53.3 = $388.95`

Hence Explained.