Question

The total cost (C) in dollars of renting a car for N days is given by the function C(n)= 40n + 50. If the total cost was $410.00, for how many days was the car rented: 9 12 10?

Answer 1

We need to make the equation equal to the total cost.

40n+50=410; We need n by itself. Let's start by subtracting 50 from both sides. 40n=360; let's divide each side by 40. N=9

The car was rented for 9 days.