assume a merchandising company uses the high-low method to separate any mixed costs into their variable and fixed elements. it provided the following income statements: may june july sales in units 4,800 5,000 5,500 sales $ 168,000 $ 175,000 $ 192,500 cost of goods sold 86,400 90,000 99,000 gross margin 81,600 85,000 93,500 selling and administrative expenses: advertising 17,000 17,000 17,000 shipping 16,800 17,500 19,250 salaries and commissions 29,600 30,000 31,000 total selling and administrative expenses 63,400 64,500 67,250 net operating income $ 18,200 $ 20,500 $ 26,250 what is the total estimated selling and administrative expense if the company sells 4,980 units?
