Nova Companys total overhead cost at various levels of activity are presented below:

Nova Company's total overhead cost at various levels of activity are presented below: Month April May June July Machine- Hours 50,000 40,000 60,000 70,000 Total Overhead Cost $ 207,500 $ 180, 200 $ 234,800 $ 262,100 Assume that the total overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 40,000 machine-hour level of activity is: Utilities (variable) Supervisory salaries (fixed) Maintenance (mixed) Total overhead cost $ 64,000 55,000 61,200 $ 180, 200 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 $262,100 of overhead cost in July was maintenance cost. (Hint: to do this, it may be helpful to first determine how much of the $262,100 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 45,000 machine-hours? 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 = Required 1 Required 2 Required 3 Required 4 What total overhead cost would you expect to be incurred at an activity level of 45,000 machine-hours? (Do not round intermediate calculations.) Total overhead cost