Walks softly currently sells 14,800 pairs of shoes annually at an average price of $59 a pair. it is considering adding a lower-priced line of shoes that will be priced at $39 a pair. the company estimates it can sell 6,000 pairs of the lower-priced shoes annually but will sell 3,500 less pairs of the higher-priced shoes each year by doing so. what annual sales revenue should be used when evaluating the addition of the lower-priced shoes?