Question

Craig bought a treadmill for $400. He estimates that the annual costs to maintain the machine will be $36. Which rational function yields the average annual cost in dollars of owning the treadmill for x years?

Answer 1

Answer:C

took the test on edge

Answer 2

Given that Craig bought a treadmill for 400 dollars.

Useful life of the macine = x

Hence annual purchase cost spread over x years will be 400/x per year.

In addition, there is an annual maintenance cost of 36 dollars.

Hence Average annual cost in dollars = purchase cost per year+maintenance cost per year

=
`(400)/(x) +36 \\= (400+36x)/(x)`

Hence answer for rational function is

either
`(400)/(x) +36[tex]</p><p>Or [tex](400+36x)/(x)`