Anew car has a sticker price of $23,750, while the invoice price paid on it was $22,950. what is the percentage markup?

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.