Crossha Companys total overbead costs at various levels of activity are presented below. Assume that the oveihead cost above consists of uthites. supervisary salaries, and maintenance. The breakdown of these costs at the 60000 machine hour level of activity in Mipy is as follows: The compary wants to break down the maintenance cost into its vasiable and fixed cost plecients. Required: 1. Fstinate how much of the 5246,000 of ovethead cos in Joly was maintenance cost. (fint Po do this first doterm he how much of tange) (Round the "Veriable cost per unit" to 2 decimal places.) 2. Using the high-low method, estimate a cost formula for maintenance. (Round the "Variable cost per unit" to 2 decimal places.) 3. Express the company's total cverhead cost in the form Y=a+bx. (Round the "Veriable cost per unit" to 2 decimal ploces.) 4. What total ovethead cost would you expect to be incurred at an actwify level of 75,000 machine hours? (Round the "Variable cost per unit" to 2 decimel plecesi)