Can you please help with parts a-d. Thanks so much!

High-low method-missing amounts The following data have been extracted from the records of Puzzle Inc.: Required: a. Calculate the missing costs. b. Calculate the cost formula for mixed cost using the high-low method. c. Calculate the total cost that would be incurred for the production of 16,000 units. d. Identify the two key cost behavior assumptions made in the calculation of your answer to part c