Chapter 4, Problem 5QC

To determine

To calculate: The cost for five-day rental over 125 miles.

Answer to Problem 5QC

The cost for five-day rental over 125 miles is 282.5

Explanation of Solution

Given Information: Cost of renting a car (Let Cost be determined by C ) is given by

  $C=49x+0.3y$

where,$x\to$number of days rented $y\to$number of miles driven

Calculation:

The cost of renting a car for x days rented and y miles driven is :

  $C(x,y)=49x+0.3y$.......(1)

To calculate the cost of renting a car for 5 days and 125 miles driven :

  $C(5,125)=49x+0.3y$

Here,

C(5,125) is the cost of renting a car for 5 days and 125 miles driven.

Substitute the value x = 5 , y = 125 in the equation (1)

  $\begin{array}{l}\Rightarrow C(5,125)=49(5)+0.3(125)\\ \Rightarrow C(5,125)=245+37.5\\ \Rightarrow C(5,125)=282.5\end{array}$

Thus,

The cost of renting a car for 5 days and 125 miles driving it is 282.5