Nova Company's total overhead cost at various levels of activity are presented below: Month April May June July Machine Hours 52.000 42.000 62.000 72,000 Total Overhead Cost $ 155, 120 $ 162,520 $ 207,720 $ 230,320 Assume that the total overhead cost above consists of utilities, supervisor salaries, and maintenance. The breakdown of these costs at the 42.000 machine hour level of activity is: unities (variable) Supervisory salaries (fixed) Maintanance (mixed) Total overhead cost 546,200 53,000 0,120 $162,520 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 $230,320 of overhead cost in July was maintenance cost. (Ant to do this. It may be helpful to first determine how much of the $230,320 consisted of utilities and supervisory salories. Think about the behavior of variable and fixed costs) 2. Using the high-low method, estimate a cost formula for maintenance in the form Ybx. 3. Express the company's total overhead cost in the form Ya+bX 4. What total overhead cast would you expect to be incurred at an activity level of 47.000 machine h 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 $230,320 of overhead cost in July was maintenance cost. (Hint: to do this, it may be helpful to first determine how much of the $230,320 consisted of utilities and supervisory salaries. Think about the behavior of variable and fixed costs.) (Do not round Intermediate calculations.) Maintenance cost in July K Required 1 Required 2 > Complete this question by entering your answers in the tabs below. 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 rou calculations. Round the "Variable cost per unit" to 2 decimal places.) Y=