M+15c+(-3m)-4 simplifies to 8 true or false

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Twelve less than a number is at most 20

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.