Do it good and correctly .

a washing machine normally sells for $650.

part a: during a holiday sale, each washing machine is marked down 20%. how much will it cost to buy the washing machine during the sale? explain how you found your answer.

part b: there is a delivery fee of $39 added to the sale price. what percent of the sale price is the delivery fee? explain how you found your answer.

part c: the sales tax is 4%. how much tax will be paid on the washing machine during the sale? do not include the delivery fee. explain how you found your answer.