Mackey Publishing Company (Mackey) is a publisher of novels. The monthly equipment maintenance cost for Mackey is considered to be a mixed cost. The variable portion of the cost is related to the number of novels published. The production volume and maintenance costs for the past six months are presented below. Mackev uses the high-low method to separate mixed costs into its fixed and variable portions. a) Calculate the variable rate for the equipment maintenance cost. ( 2 marks) Round your answer to 5 decimal places. Variable Cost per Unit Answer b) Caiculate the fixed portion of the equipment maintenance cost. ( 4 marks) Round your answer to the neartst whole number. Fixed Cost: Answer c) Assume that 420,000 novels is the budgeted production level for June. Using the results of the high-low method in parts a) and b), what is the expected total equipment maintenance cost for June? (2 marks) Round your answer to 2 decimal places. Expected total equipment maintenance cost for June