Question

Joe is mowing lawns to buy a new car. For every lawn that he mows he earns $20. Joe charges a one time clean up fee of $50 before he takes on a new client. The function that Joe uses to determine how much he will make is: f(x) = 20x +50. If Joe mows 5 lawns how much will he make?
$100
$120
$150
None of the choices are correct.
HELP?

Answer 1

This isn't enough information to answer the question. We need to know if he mowed the same lawn 5 times, 5 different lawns, and so on.

If he mowed one lawn 5 times, that would be $150 but if he mowed lawns for different people then the answer is None of the choices are correct because you can eliminate the first two choices for being too low for any possible scenario.