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As part of her job as a cost analyst, Alya Hisham collected the following information concerning the operations of the Assembly Department: Required: a) Calculate the variable cost per machine hour (unit). b) Calculate the total fixed costs. c) Use the high-low method to determine the estimating cost function with machine hours as the cost driver. (2 marks) 4.6875x+27,937,50 d) If June's estimated machine hours total 1,400, what are the total estimated costs of the Assembly (1mark) e) Consider variable cost per machine hour "b" calculated in (a) above. If it takes two (2) machine hours to produce one (1) unit and a total of 120 units are produced, then calculate the total (1 mark) variable cost. f) What is the main advantage of using the regression method for cost estimation