Colby Limited is a manufacturing company whose total factory overhead costs fluctuate somewhat from year to year, according to the number of machine-hours worked in its production facility. These costs at high and low levels of activity over recent years are given below: Level of Activity Low High 82,000 92,000 $35,230,000 $37,380,000 Machine-hours Total factory overhead costs The factory overhead costs above consist of indirect materials, rent, and maintenance. The company has analyzed these costs at the 82,000 machine-hours level of activity as follows: Indirect materials (variable) Rent (fixed) Maintenance (mixed) Total factory overhead costs $12,546,000 13,600,000 9,084,000 $35, 230,000 For planning purposes, the company wants to break down the maintenance cost into its variable and fixed cost elements. Required: 1. Estimate how much of the factory overhead cost of $37,380,000 at the high level of activity consists of maintenance cost. Maintenance cost 2. Using the high-low method, estimate a cost formula for maintenance. Y= 3. What total overhead costs would you expect the company to incur at an operating level of 87,000 machine-hours? Total factory overhead costs