Choose the correct simplification of 9x2(4x + 2x2 − 1). 18x4 + 36x3 − 9x2 18x4 − 36x3 + 9x2 36x4 + 18x3 − 9x2 36x4 − 13x3 + 9x2

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.