40 points! find the exact value by using a half-angle identity. ⬇️⬇️⬇️

Determine the relationship of ab and cd given the following points

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

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.