managerial accounting help asap !?

The Central Valley is a expenses for the last three firm that sells a single product. The company's revenues and L months are presented below: VALLEY COMPANY Comparative Income Statement Second Quarter Sales in units Sales revenue June 4,500 $630,000 5,250 6,000 252,000 $735,000 $840.000 378,000 294,000 336,000 504,000 Less: cost of goods sold Gross margin Less: operating expenses Shipping expense Advertising expense 56.000 63,500 71,000 Salaries and commissions 70,000 70,000 70,000 143.000 insurance expense 161.750 180,500 Depreciation expense 9,000 9,000 9.000 42,000 Total operating expenses 42,000 42,000 320,000 Net income 346,250 372,500 58,000 94,750 $131,500 Required: a. Determine which expenses are mixed and, by use of the high-low method, separate each mixed expense into its variable and fixed components. State the cost formula for each mixed expense. b. Compute the company's total contribution margin for May