Cullumber Corp. has collected the following data concerning its maintenance costs for the past 6 months. Total Cost July August September October November December Units Produced 19,900 35,392 39,816 24,332 44,240 42,028 $44,670 53,088 60,830 47,356 82,397 68,572 Part 1 Compute the variable cost per unit using the high-low method (Round answer to 2 decimal places, eg. 2.25.) Variable cost per unit