Crosshili Company's total overhead costs at various lovels of activity are presented below. Assume that the overheod cost above consists of utalities, supervisory salaries, and maintenance. The breakdown of these costa at the 40,000-machine-hour level of activity in May is as follows: The compony wants to break down the maintenance cost into its varlable and fixed cost elements Required: 1 Estimate how much of the $247300 of overhead cost in July was maintenance cost. (Hint to da this. first desermine haw mueh at the $247100 consisted of utilities and supervisory salaries. Think about the behaviour of variable and fixed costs within the relevant range.) (Do not round intermediate calculations) 2. Using the high-low method, estimate a cost formula for maintenance. (Do not round your intermediate calculations. Pound the "Variable cost per unit" to 2 decimal places.) 3, Express the company's total overhead cost in the form Y=a+bx, (Do not round your intermediate calculations. found the "Varinble cost per unit" to 2 docimal places.) 4. What total overhead cost would you expect to be incurred at an activity level of 45,000 machineriours? (Do not round intermeelate colculations.)