The are of a rectangle is 525 square centimeters. the ratio of the length to the width is 7: 3. find the length and the width.

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.