The distance traveled by a car moving at a constant speed varies directly with the length of time it travels. if the car travels 172 miles in 4 hours, how many miles will it travel in 10 hours?

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.