Question

The total cost (c) in dollars of renting a car for d days is given by the equationc =50 + 10n. If the total cost was $130, for how many days was the car rented?A. 8B. 13C. 3D. 18

Answer 1

Given:

The equation of total cost is, c = 50+10n.

The total cost is, c = $130.

The objective is to find the number of days for renting the car.

Substitute the value of c in the given equation of total cost.

`\begin{gathered} 130=50+10n \\ 130-50=10n \\ 80=10n \\ n=(80)/(10) \\ n=8 \end{gathered}`

Thus, the number of days for renting the car is 8.

Hence, option (A) is the correct answer.