PLEASE ANSWER ASAP

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

Month	Machine- Hours			Total Overhead Cost
April		52,000		$	214,540
May		42,000		$	186,840
June		62,000		$	242,240
July		72,000		$	269,940

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)	$	67,200
Supervisory salaries (fixed)		51,000
Maintenance (mixed)		68,640
Total overhead cost	$	186,840

Nova Companys management wants to break down the maintenance cost into its variable and fixed cost elements.

Required:

1. Estimate how much of the $269,940 of overhead cost in July was maintenance cost. (Hint: to do this, it may be helpful to first determine how much of the $269,940 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 companys 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?