The Fashion Shoe Company operates a chain of womens shoe shops around the country. The shops carry many styles of shoes that are all sold at the same price. Sales personnel in the shops are paid a substantial commission on each pair of shoes sold (in addition to a small basic salary) in order to encourage them to be aggressive in their sales efforts. The following worksheet contains cost and revenue data for Shop 48 and is typical of the companys many outlets: Per Pair of Shoes Selling price $ 30.00 Variable expenses: Invoice cost $ 13.50 Sales commission 4.50 Total variable expenses $ 18.00 Annual Fixed expenses: Advertising $ 30,000 Rent 20,000 Salaries 100,000 Total fixed expenses $ 150,000 Calculate the annual break-even point in dollar sales and in unit sales for Shop 48