Fill in the missing amounts in each of the eight case situations below. Each case is independent of the others. (Hint: One way to find the missing amounts would be to prepare a contribution format income statement for each case, enter the known data, and then compute the missing items.) Required a. Assume that only one product is being sold in each of the four following case situations: Case #2 Case #4 Case #1 Case #3 20,500 Unit sold 9,300 5,100 306,900 277,200 158,100 Sales 246,000 186,000 Variable expenses 96,000 167,000 84,000 Fixed expenses (21,800) Net operating income (loss) 148,500 (22,800) 11 Contribution margin per unit