Your geometry trip goes on a field trip to the zoo. if an 18 -foot tall tree casts a 9-foot long shadow, how tall is an adult giraffe that casts a 7-foot long shadow

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.