Take the per unit cost from March.

The Central Valley Company is a manufacturing firm that produces and sells a single product. The company's revenues and expenses for the last four months are given below. Central Valley Company Comparative Income Statement May March Apr June Sales in units 6,800 6,300 7,950 9,600 Sales revenue $718,000 $648,000 $801,000 $858,000 Less: Cost of goods sold 379,000 351,000 388,000 444,000 Gross margin $339,000 $297,000 $413,000 $414,000 Less: Operating Expenses 65,100 52,400 68,600 62,000 Shipping expense 97,000 Advertising expense 97,000 97,000 97,000 Salaries and commissions 166,200 134,000 170,500 164,500 18,000 18,000 18,000 18,000 Insurance expense 51,000 51,000 51,000 51,000 Amortization expense $397,300 $352,400 $405,100 $392,500 Total operating expenses (58,300) (55,400) 7,900 21,500 Net income Required 1. Management is concerned about the losses experienced during the spring and would like to know more about the cost behaviour. Develop a cost equation for each of the costs. Cost of goods sold EI$ 173,472 28.18 per unit Shipping per unit Salaries & commission per unit