I need help solving this equation!

What statement is true? 2x^2-9x+2=-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.

What is r i 4.5+10r=-6.5 with work pls