Question 32264
I think the function will be c(x) = (1/8)x + 20
1. c(180) = 180/8 + 20 = 45/2 + 20 = $42.50
2. 100 = x/8 + 20 => x=8(80) => x=640
3. It represents the variable cost per mile; varies by number of miles driven.
4. It represents a flat charge that the renter must pay, even if the car is not driven at all.
5. This is a linear function.  Pick any two x's and find c(x) for those x's.  Connect the dots as a staright line.