Ellen buys 5 videos that each cost c dollars a DVD for $30 and a CD for $20. Write an expression in simplest form that represents the total amount spent
5c comes from the 5 videos that cost cdollars. 50 is when you add the $30 for the DVD and $20 for the CD together. You add those up to get the answer, but you'll have to solve for cfirst, then you can solve it.
