Help Save & Exit June 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 Monthly Income Statements March April May Sales in units 5,600 5,100 5,950 6.100 Sales revenue $772,800 $703,800 5807,300 5841.00 Lost Coat of goods sold 404,500 377,000 413.250 432,000 Gross margin 360,300 326,000 394,050 409,800 tese: Operating expenses Shipping expense 70,000 65,000 73.250 74,000 Advertising expense 16,000 76,000 76.000 76,000 Salaries connasions 149.300 161.500 180,500 116,500 Insurance expense 9.600 9,600 1,600 9,600 Depreciation expense 45.000 45.000 45,000 69,000 Total operating expenses 329,900 3578100 384,350 191,100 Not Income 5611,600) 5630,300) 9.700 18.700 Rea 1. Management is concerned about the losses experienced during the spring and yould like to know more about the cost behaviour Develop a cost equation for each of the costs, Y COGS shipping Sales and commissions