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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. 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. 2. Using the cost equations, prepare a contribution margin income statement (in good form) for September when 6,400 units are expected to be sold