All applicable Problems are available in Connect. High-low method A department of Alpha Co. incurred the following costs for the month of September. Variable costs, and the variable portion of mixed costs, are a function of the number of units of activity: During October the activity level was 8,000 units, and the total costs incurred were $70, 500. Calculate the variable costs, fixed costs, and mixed costs incurred during October. Use the high-low method to calculate the cost formula for mixed cost. The following data have been extracted from the records of Puzzle. Inc.: Calculate the missing costs. Calculate the cost formula for mixed cost using the high-low method. Calculate the total cost that would be incurred for the production of 20,000 units. Identify the two key cost behavior assumptions made in the calculation of your answer to part c