Please help! ASAP, I'm doing a test and I really need a good grade.

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

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.

Is a square always, sometimes, or never a parallelogram