Please help me 4 2/5 x 3 2/5

Consider the function f(x)=-5x+3 what is f(-2)

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.

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?