amzav260 amzav260 12-11-2020 Mathematics contestada oday, 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? $ b) If the regular price of an item is x dollars, what is the discount price in dollars? Write an expression. $ c) The discount price of a hat is $18. What is the regular price? $ Plz hurry I need this answered fast!!!!