High-Low method and Regression Analysis Question 1 a. The following information was obtained from a company. Production (x) 250 Costs ($) 4 050 750 4 250 500 4 100 1 000 4 000 2 000 6 000 1 500 5 000 1 375 5 500 1625 4750 Required: a. Using the High-Low method, determine the variable cost per unit and the total fixed cost