The expression 0.70 (p-40) +0.2p represents the final price of a sofa after two discounts were taken and a delivery fee. the delivery fee is added to the discounted price after the first two discounts. the variable p represents the price of the sofa before discounts and fees are applied. which statements are true?

select each correct answer.

a.) the price of the sofa was first reduced by $40.

b.) the delivery fee was 30% of the original price.

c.) the price of the sofa was first reduced by 30%.

d.) the delivery fee was 20% of the original price.