An item is priced at $13.22. if the sales tax is 4%, what does the item cost including sales tax

sales tax = 13.22 * .04

sales tax = .53  (round to the nearest cent)

total cost = cost of item + sales tax

total cost = 13.22 + .53

total cost = 13.75

i just took the test, the correct answer is .. 31.5 in.