The regular price of an item at a store is p
dollars. the item is on sale for 20% off the regular price. some of the expressions shown below represent the sale price, in dollars, of the item.
expression a: 0.2p
expression b: 0.8p
expression c: 1 -0.2p
expression d: p-0.2p
which two expressions each represent the sale price of the item?
a. expression a and expression e
b. expression b and expression c
c. expression b and expression d
d. expression c and expression d