Nova Company's total overhead cost at various levels of activity are presented below: Month April May June July Machine- Hours 51,000 41,000 61,000 71,000 Total Overhead Cost $ 201,430 $ 174,130 $ 228,730 $ 256,030 Assume that the total overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 41,000 machine-hour level of activity is: Utilities (variable) Supervisory salaries (fixed) Maintenance (mixed) Total overhead cost $ 61,500 50,000 62,630 $174,130 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 $256,030 of overhead cost in July was maintenance cost. (Hint: to do this, it may be helpful to first determine how much of the $256,030 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 46,000 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 $256,030 of overhead cost in July was maintenance cost. (Hint: to do this, it may be helpful to first determine how much of the $256,030 consisted of utilities and supervisory salaries. Think about the behavior of variable and fixed costs.) (Do not round intermediate calculations.) Maintenance cost in July Required 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 = Required 1 Required 2 Required 3 Required 4 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 Fixed Cost Utilities cost Supervisory salaries cost Maintenance cost Total overhead cost $ 0.00 $ 0 Y = Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Required 4 What total overhead cost would you expect to be incurred at an activity level of 46,000 machine-hours? (Do not round intermediate calculations.) Total overhead costs