Help please i dont know what else to write i just need 20 characters

Abcd is a square. what is the measure of angle bac

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.

With both problems. a.s.a.p directions on photo ^