Crosshill Company's total overhead costs at various levels of activity are presented below: Month All Hay June July Rachine 63.000 53,000 73.000 14.000 Total Overhead Cost 1 115,000 $ 138.000 3326.000 $ 193.000 Assume that the overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 53,000-machine-hour level of activity in May is as follows: Utilities (variable) Supervisory salaries (fixed) Maintenance Gixed) Total overhead coat $35.000 28.000 85.000 $. 138.000 The company wants to break down the maintenance cost into its variable and fixed cost elements Required: 1. Estimate how much of the $193,000 of overhead cost in July was maintenance cost. (Hint: To do this, first determine how much of the $193,000 consisted of utilities and supervisory salaries. Think about the behaviour of variable and fixed costs within the relevant range.) (Round the "Variable cost per unit" to 2 decimal places.) Maintenance cost in July 2. Using the high-low method, estimate a cost formula for maintenance. (Round the "Variable cost per unit" to 2 decimal places.) Machine Hours Maintenance Cast High activity level Low activity level Change per MH Variable cost element Fixed cost element 3. Express the company's total overhead cost in the form Y = a + bx (Round the "Variable cost per unit" to 2 decimal places.) Variable Cost per Machine-Hour Fixed Cost Utilities cost Supervisory salaries cost Maintenance cost Total overhead cost 4. What total overhead cost would you expect to be incurred at an activity level of 68.000 machine hours? (Round the "Variable cost per unit" to 2 decimal places.) Total overhead cost