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Nova Company's total overhead cost at various levels of activity are presented below: Total Machine- Overhead Month Hours Cost April 54,000 $ 204, 660 May 44,000 $ 179, 760 June 64,000 $ 229,560 July 74,000 $ 254, 460 Assume that the total overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 44,000 machine-hour level of activity is: Utilities (variable) $ 61, 600 supervisory salaries (fixed) 54,000 Maintenance (mixed) 64, 160 Total overhead cost $179, 760 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 $254,460 of overhead cost in July was maintenance cost. (Hint: to do this, It may be helpful to first determine how much of the $254,460 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 total overhead cost would you expect to be incurred at an activity level of 49,000 machine-hours? Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Required 4 Estimate how much of the $254,460 of overhead cost in July was maintenance cost. (Hint: to do this, it may be helpful to first determine how much of the $254,460 consisted of utilities and supervisory salaries. Think about the behavior of variable and fixed costs.) (Do not round intermediate calculations.) Maintenance cost in JulyRequired 1 Required 2 Required 3 Required 4 Using the high-low method, estimate a cost formula for maintenance in the form Y = a + bX. (Do not round your intermediate calculations. Round the "Variable cost per unit" to 2 decimal places.) Y = XRequired 1 Required 2 Required 3 Required 4 Express the company's total overhead cost in the form Y = a + DX. (Do not round your intermediate calculations. Round the "Variable cost per unit" to 2 decimal places.) Variable Cost per Machine- Fixed Cost Hour Utilities cost Supervisory salaries cost Maintenance cost Total overhead cost Y = + XRequired 1 Required 2 Required 3 Required 4 What total overhead cost would you expect to be incurred at an activity level of 49,000 machine-hours? (Do not round intermediate calculations.) Total overhead costs