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			$21,000	$0		?	?
Costs			?	?		$(9,000)	$0

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.

			1	2	3	4
Increases (decreases) in:
Revenue			$21,000	$0	Answer Incorrect Mark 0.00 out of 1.00	Answer Incorrect Mark 0.00 out of 1.00
Costs			Answer Incorrect Mark 0.00 out of 1.00	Answer Incorrect Mark 0.00 out of 1.00	$(9,000)	$0

b. ($9,000) Use a negative signs with answers to reflect decreases.

			1	2	3	4
Increases (decreases) in:
Revenue			$21,000	$0	Answer Incorrect Mark 0.00 out of 1.00	Answer Incorrect Mark 0.00 out of 1.00
Costs			Answer Correct Mark 1.00 out of 1.00	Answer Incorrect Mark 0.00 out of 1.00	$(9,000)	$0