Advd player costs $99.99. for the next two weeks, the dvd player will be on sale for 20% off. what is the amount of the discount rounded to the nearest penny?

W-16=-12 solve each one step equation plz

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.

Can someone, me with this. i really need with this