Differential Analysis In each of four independent cases, the amount of differential revenue or differential cost is as follows (parentheses indicate decreases;: Increases (decreases) in: Revenue Costs $17,000 s0 2? (13,000) s0 For each case, determine the missing amount that would be necessary for the net differential amount to a. $10,000 Use a negative signs with answers to reflect decreases. be: Increases (decreases) in: $17,000 so s Revenue s(13,000) so Costs b. ($5,000)