Inverse or direct variation. x=3/5y

Which expression is equivalent to 2x^2+7x+4?

What is the value of x in the following equation? -3x-2=2x+8

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.