An equation that is true for all real numbers for which both sides are defined is called​ a(n)

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

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.

Two numbers have a sum of -19. one number is x. what expression represents the other number?