Differential Analysis ln each of four independent cases the amount of differential revenue or differential cost is as follows parentheses indicate decreases 20,000 s0 ?7$(00.000 $0 For each case, determine the missing amount that would be necessary for the net differential amount to be .$10,000 Use a negative signs with answers to reflect decreases Increases (decreases) in $20.000 b.($8,000) Use a negative signs with answers to refilect decreases so s 10.000 5 6 8 9