Nova Company's total overhead cost at various levels of activity are presented below Month April May June Machine- Hours 52,000 42,000 62,000 72,000 Total Overhead Cost $ 209,400 $ 182,400 $ 236,400 $ 263,480 July Assume that the total overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these cost at the 42,000 machine-hour level of activity is: Utilities (variable) Supervisory salaries (fixed) Maintenance (mixed) Total overhead cost $ 63,000 51,000 68,400 $182,400 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 $263,400 of overhead cost in July was maintenance cost. (Hint to do this, it may be helpful to first determine how much of the $263,400 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 costin e form Y=a.bX 4 What total overhead cost would you expect to be incurred at an activity level of 47.000 machine hours? 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 47,000 machine hours? Do not round Intermediate calculations.) Total Overhead cost