Hello can you answer questions number 3 and 4 please and I need an explain

thank you

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

Month	Machine-Hours	Total Overhead Cost
April	51,000	$ 174,390
May	41,000	$ 151,490
June	61,000	$ 197,290
July	71,000	$ 220,190

Assume that the total overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 41,000 machine-hour level of activity is:

Utilities (variable)	$ 49,200
Supervisory salaries (fixed)	43,000
Maintenance (mixed)	59,290
Total overhead cost	$ 151,490

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

Required:

1. Estimate how much of the $220,190 of overhead cost in July was maintenance cost. (Hint: to do this, it may be helpful to first determine how much of the $220,190 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 46,000 machine-hours?

Express the companys 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 =		+			X

Q4

What total overhead cost would you expect to be incurred at an activity level of 46,000 machine-hours? (Do not round intermediate calculations.)

Total overhead cost