Golden Company?s total overhead cost at various levels of activity are presented below: 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: The company wants to break down the maintenance cost into its variable and fixed cost elements. 3. Express the company?s total overhead cost in the form Y = a + bX. 4. What total overhead cost would you expect to be incurred at an activity level of 46,000 machine- hours