Scenario: Marco collects 12 new coins each year to add to his coin collection. We can represent equivalent ratio relationships with multiple types of models
to show the growth of his coin collection over time.

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.