Golden Companys total overhead cost at various levels of activity are presented below: Month Machine-Hours Total Overhead Cost March 51,000 $190,960 April 41,000 $166,360 May 61,000 $215,560 June 71,000 $240,160 Assume that the 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 as follows: Utilities (variable) $ 57,400 Supervisory salaries (fixed) 46,000 Maintenance (mixed) 62,960 Total overhead cost $ 166,360 The company wants to break down the maintenance cost into its variable and fixed cost elements. Required: 1. Estimate how much of the $240,160 of overhead cost in June was maintenance cost. (Hint: To do this, it may be helpful to first determine how much of the $240,160 consisted of utilities and supervisory salaries. Think about the behavior of variable and fixed costs within the relevant range.) (Do not round intermediate calculations. Omit the "$" sign in your response.) Maintenance cost in June $ 2. Using the high-low method, estimate a cost formula for maintenance. (Round the "Variable cost per unit" to 2 decimal places and "Fixed cost" to the nearest dollar amount. Omit the "$" sign in your response.) Y = $ + $ X 3. Express the companys total overhead cost in the form Y = a + bX. (Round the "Variable cost per unit" to 2 decimal places and "Fixed cost" to the nearest dollar amount. Omit the "$" sign in your response.) Y = $ + $ X 4. What total overhead cost would you expect to be incurred at an activity level of 46,000 machine-hours? (Do not round intermediate calculations. Omit the "$" sign in your response.)