Assume that the total overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 39,000 machine-hour level of activity is: Nova Company's management wants to break down the maintenance cost into its variable and fixed cost elements. Required: 1. Estimate how much of the $240,200 of overhead cost in July was maintenance cost. (Hint: to do this, it may be helpful to first determine how much of the $240,200 consisted of utilities and supervisory salaries. Think about the behavior of variable and fixed costs.) 2. Using the high-low method, estimate a cost formula for maintenance in the form Y=a +bX 3. Express the company's total overhead cost in the form Y=a+bX. 4. What totaloverhead cost would you expect to be incurred at an activity level of 44,000 machine-hours? Complete this question by entering your answers in the tabs below. What total overhead cost would you expect to be incurred at an activity level of 44 achine-hoDot round Intermediate calculations.) Estimate how much of the $240,200 of overhead cost in July was maintenance cost. (Hint: determine how much of the $240,200 consisted of utilities and supervisory salaries. Think fixed costs.) (Do not round intermediate calculations.) Complete this question by entering your answers in the tabs below. Using the high-low method, estimate a cost formula for maintenance n the form r=a+bX. (Do not round your intermediate calculations. Round the "Variable cost per machine hour" to 2 decimalplaces.) Express the company's total overhead cost in the form Y=a+bX. (Do not round your intermediat calculations. Round the "Variable cost per machine hour" to 2 decimal places.)