not quite sure how to do this one

EESU k my work mode: This shows what is correct or incorrect for the work you have completed so far. It does not indicate completion Return to questio Month April May June July Machine- Hours 52,000 42,000 62,000 72,000 Total Overhead Cost $191,060 $ 165,260 $216,860 $ 242,660 Assume that the total overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 42.000 machine-hour level of activity is: Utilities (variable) Supervisory salaries (fixed) Maintenance (mixed) Total overhead cost $ 63,000 41,000 61,260 $165,260 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 $242,660 of overhead cost in July was maintenance cost. (Hint: to do this, it may be helpful to first determine how much of the $242,660 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 47,000 machine-hours?