1. During the months of April through September, the following total utility costs were paid at various production volumes: Total Month Utility Costs Total Production Volume April May June July August September $ 5,000 7,000 8,000 6,000 4,000 10,000 16,000 units 26,000 units 32,000 units 20,000 units 12,000 units 36,000 units a. Use the high-low method to calculate the cost formula utility costs. b. If the production volume were expected to be 22,000 units for the month of November, what amount of total costs would be expected