Michael Scott works as a cost analyst for mid-size paper company. He collected the following information concerning the operations of the Machining Department: Observation Machine-hours Total Operating Costs January 4,000 $45,000 February 4,600 49,500 March 3,800 45,750 April 4,400 48,000 May 4,500 49,800 Required a. Use the high-low method to determine the estimating cost function with machine hours as the cost driver b. If June's estimated machine-hours total 4,200, what are the total estimated costs of the Machining Department