Today, everything at a store is on sale. The store offers a 20% discount.

a. The regular price of a T-shirt is $18. What is the discount price?

Type the answer in the box below.

$


b. If the regular price of an item is x dollars, what is the discount price in dollars?

Type the correct expression in the box below.

$


c. The discount price of a hat is $18. What is the regular price?

Type the answer in the box below.

$