What does the number 0.02 represents in percentage?

Val and tony get paid per project. val is paid a project fee of $44 plus $12 per hour. tony is paid a project fee of $35 plus $15 per hour. write an expression to represent how much a company will pay to hire both to work the same number of hours on a project.

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

What is the the greatest common factor ?