(6 Marks) Question 2 John Williams, the Cost Accountant of ABC Company, collected the following information concerning the operations of the Machining Department Observation Machine-hoursTotal Operating Costs June July August September October 5,000 6,500 5,200 4,800 4,200 $56,000 71,600- 59,300 56,000 54,500 Required: a) Use the high-low method to determine the estimating cost function with machine hours as the cost driver 3 marks) 6SOO 4200 17100-7. 393 2300 23SO If November's estimated machine-hours total 4,500, what are the total estimated costs of the Machining Department? b) (1 mark)