Need help for this midterm

What aspects of lines have to be diffrent

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

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.