Graphic equations

Question

A rental company charges $70/day plus $0.20 for every mile travel. Write a linear equation that expresses the total cost y, where x represents the number of miles you travel. Then choose a number of miles, x, you travel that day and find the total cost of renting the truck

Answer 1

C = 70D + .20x

drive 100 miles in 1 day costs

C= 70(1)+ .2(100) = 70 +20 = $90