If y varies inversely as x, and y=12 when x=3 find y when x=4

The price of a coat increased from $78 to $92. what is the price increase 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.

Find the missing dimension! need asap! tiny square is a =3025 in ²