Differential Analysis In each of four independent cases, the amount of differential revenue or differential cost is as follows (parentheses indicate decreases): 1 2 3 4 Increases (decreases) in: Revenue $19,000 $0 ? ? ? ? $(11,000) $0 Costs For each case, determine the missing amount that would be necessary for the net differential amount to be: a. $10,000 Use a negative signs with answers to reflect decreases. 23 Increases (decreases) in: Revenue $19,000 $0 $ (21,000) * $ 10,000 Costs $ 9,000 $ (10,000) $(11,000) $0 b. ($7,000) Use a negative signs with answers to reflect decreases. Increases (decreases) in: Revenue $19,000 (26,000) * $ $0 $ (7,000) X 4,000 * $ $(11,000) (7,000) $0 Costs $