Question

Jake hires a septic system contractor to dig trenches for his new septic tank. The cost to hire the contractor is a fixed cost of $160 plus an additional $70 per hour. Which expression below describes the average cost of an x-hour job?

A. 160x+70/x dollars per hour

B. x/70x+160 dollars per hour

C. 70x+160/x dollars per hour

D. 160+70/x dollars per hour

Answer 1

The answer is d. You have to add 160 to 70 times x the hours worked. Good luck.