please explain how to do it too and it would be amazing if you could use the same format at the question

All the other ones on chegg were incorect i tried to double check with them first but they were all wrong

Crosshill Company's total overhead costs at various levels of activity are presented below: Month April May June July Machane-Hours 66,000 56,000 76,000 86,000 Total Overhead Cost $135,000 $135,000 $318,000 $184,000 Assume that the overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 56,000-machine-hour level of activity in May is as follows. Utilities (variable) Supervisory salaries (fixed) Maintenance (mixed) Total overhead cost $ 31,000 26,000 78.000 $135,000 The company wants to break down the maintenance cost into its variable and fixed cost elements. Required: 1. Estimate how much of the $184,000 of overhead cost in July was maintenance cost. (Hint: To do this, first determine how much of the $184,000 consisted of utilities and supervisory salaries. Think about the behaviour of variable and fixed costs within the relevant range) (Round the "Variable cost per unit" to 2 decimal places.) Answer is complete and correct. Maintenance contin July 110 700 2. Using the high-low method, estimate a cost formula for maintenance. (Round the "Variable cost per unit" to 2 decimal places.) Answer is complete but not entirely correct. High activity level Low activity level Change Machine- Hours Maintenance Cost 86,000$ 110,700 56,000 78,000 30,000 $ 32,700 $ Variable cost element Fixed cost element per MH 0.99 12,490 Answer is complete but not entirely correct. Y- S 12.4903 S 0.99 3. Express the company's total overhead cost in the form Y = a + bx (Round the "Variable cost per unit" to 2 decimal places.) Answer is complete but not entirely correct. Variable Cost per Machine- Fixed Cost Hour Utilities cost 0.55 Supervisory salaries cost S 26,000 Maintenance cost 1.09 16,9603 Total overhead cost $ 1.64 $ 42,960 Answer is complete but not entirely correct. Y s 23 42,960,00 4. What total overhead cost would you expect to be incurred at an activity level of 71,000 machine hours? (Round the "Variable cost per unit" to 2 decimal places.) 4. What total overhead cost would you expect to be incurred at an activity level of 71,000 machine-hours? (Round the "Variable cost per unit" to 2 decimal places.) Answer is complete but not entirely correct. Total overhead cost 159 250