It takes 5 minutes to fill an empty aquarium to a depth of 5/8
meters. What is the unit rate in minutes per meter?

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.