Answer:
![]\text{Total cost} = \text{Cost of renting a car per day}* \text{Number of days for which the car is rented.}](https://img.qammunity.org/2017/formulas/mathematics/middle-school/7nrwhkkurinb9ew0ulsy9gfw1ndxf1h414.png)
Explanation:
We are given the following information in the question:
In order to answer his question we have to make the following assumptions:
Let z be the cost of renting the car for one day.
We are given that y is the cost of renting the cars for x days.

Thus, total cost y for renting car for x days at z cost of renting per day =

The above equation is the required equation for total cost of renting a car for x days.