please help

Home Entertainment is a small, family-owned business that purchases LCD televisions from a reputable manufacturer and sells them at the retail level. The televisions sell, on average, for $2,060 each. The average cost of a television from the manufacturer is $1,330. Home Entertainment has always kept careful accounting records, and the costs that it incurs in a typical month are as follows: Costs Cost Formula Selling : Advertising 1, 090 per month Delivery of televisions 50 per television sold Sales salaries and commissions 3, 040 per month, plus 5% of sales Utilities 404 per month Depreciation of sales facilities 3, 160 per month Administrative: Executive salaries 11, 500 per month Depreciation of office equipment 805 per month Clerical 1, 860 per month, plus $49 per television sold Insurance 720 per month