At a store, a hat has a regular price of x dollars. During a sale, the price of
the hat is discounted by 30%. The expression 0.7x describes the
discounted price, in dollars, of the hat. Which expression also describes
the discounted price, in dollars, of the hat?
A-0.3x
B-Ox-30
C-x-0.3
D-Ox-0.3x