Đội ngũ lao động thương mại luôn có sự biến động về số lượng và cơ cấu cho ví dụ

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.