5. 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?

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

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

Step-by-step explanation:

20% = 20/100 = 0.2

The amount you need to pay for a T shirt is

Cost = original amount(100% - 20%)

Original amount = 18

100% - 20% = 80%

80% = 80 / 100 = 0.8

What this means is that you will pay 80% of  the original cost.

Cost = 18*0.8

Cost = $14.40

Part B

Cost = 0.8 * x

Part C

Selling price = 0.8*Original Cost

Selling price = 18

18 = 0.8 * x

18/0.8 = x

x = 22.5

The original price was $22.50

c is the answer

step-by-step explanation:

the answer is d

hope this