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: b. Assume that more than one product is being sold in each of the four following case situations: (For all requirements, Loss amounts should be indicated by a minus sign.) Case #1 Case #2 Case #3 Case #4 Unit sold 9,000 13,000 20,800 4,600 Sales 225,000 $ 273,000 $ 416,000 156,400 Variable expenses 108,000 130,000 312,000 86,000 Fixed expenses 85,000 174,000 85,000 72,000 Net operating income (loss) $ Contribution margin per unit 32,000 $ 13 $ (31,000) $ 19,000 $ 1,600 11 $ 5 $ 15 Case #1 Case #2 Case #3 Case #4 Sales $ 441,000 $ 197,000 403,560 $ 299,000 Variable expenses 264,600 131,990 0 77,740 Fixed expenses 114,000 70,000 474,000 220,000 Net operating income (loss) 62,400 (4,990) 70,440 $ 1,260 Contribution margin ratio (percent) 40% 33 % 78% 74 %