Question 1 (9 points) Saved The Runner Company's total monthly maintenance costs fluctuate with the volume of machine hours. Data from the last six months is as follows: Total Machine Maintenance Month Hours Cost January February March April May June 16,700 18,900 16,000 17,200 19,600 20,000 $46,300 49.100 42,700 47,500 53,100 52,300 Required: 1. Determine the variable cost per unit and the total monthly fixed cost using the high-low method. (5 marks) 2. Show the cost formula for the maintenance cost. (2 marks) 3. Describe the behaviour of a variable cost. Provide one example of a variable cost. (2 marks)