Crosshill Company's total overhead costs at various levels of activity are presented below: Month April May Machine- Hours 49,000 39,000 59,000 69,000 Total Overhead Cost $210,730 $186,030 $ 235, 430 $260,130 June July Assume that the overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 39,000-machine-hour level of activity in May is as follows: $ Utilities (variable) Supervisory salaries (fixed) Maintenance (mixed) 50, 700 70,000 65,330 Total overhead cost $ 186,030 The company wants to break down the maintenance cost into its variable and fixed cost elements. Required: 1. Estimate how much of the $260,130 of overhead cost in July was maintenance cost. (Hint: To do this, first determine how much of the $260,130 consisted of utilities and supervisory salaries. Think about the behaviour of variable and fixed costs within the relevant range.) (Do not round intermediate calculations.) Maintenance cost in July $ 100,430 2. Using the high-low method, estimate a cost formula for maintenance. (Do not round your intermediate calculations. Round the "Variable cost per unit" to 2 decimal places.) High activity level Low activity level Change Machine- Maintenance Hours Cost 69,000 $ 260,130 39,000 186,030 30,000 $ 74,100 $ Variable cost element Fixed cost element 2.47 per MH 89,700 [ Y= $89,700 + $2.47 3. Express the company's total overhead cost in the form Y = a +bX. (Do not round your intermediate calculations. Round the "Variable cost per unit" to 2 decimal places.) Variable Cost per Machine-Hour $ 50,700.00 Fixed Cost $ 70,000 Utilities cost Supervisory salaries cost Maintenance cost Total overhead cost $ 50,700.00 $ 70,000 3. Express the company's total overhead cost in the form Y= a +bX. (Do not round your intermediate calculations. Round the "Variable cost per unit" to 2 decimal places.) Variable Cost per Machine-Hour $ 50,700.00 Fixed Cost $ 70,000 Utilities cost Supervisory salaries cost Maintenance cost Total overhead cost $ 50,700.00 $ 70,000 Y= + x 4. What total overhead cost would you expect to be incurred at an activity level of 44,000 machine-hours? (Do not round intermediate calculations.) Total overhead cost