Chang family is on way home from a cross country road trip. Are they driving for 18 hours or do they have 18 hours to go?

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

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.

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4