Write in function notation; y= 5x + 2

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

In a column proof the right column states your reasons

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab