Ziegler Inc. has decided to use the high-low method to estimate the total cost and the fixed and variable cost components of the total cost. The data for various levels of production are as follows: Units Produced Total Costs 1,485 $116,640 2,550 157,980 4,185 181,440 a. Determine the variable cost per unit and the total fixed cost. Variable cost: (Round to the nearest dollar.) per unit Total fixed cost: b. Based on part (a), estimate the total cost for 2,040 units of production. Total cost for 2,040 units