Miller Companys contribution format income statement for the most recent month is shown below:

	Total	Per Unit
Sales (33,000 units)	$ 198,000	$ 6.00
Variable expenses	99,000	3.00
Contribution margin	99,000	$ 3.00
Fixed expenses	48,000
Net operating income	$ 51,000

Required:

(Consider each case independently):

1. What is the revised net operating income if unit sales increase by 18%?

2. What is the revised net operating income if the selling price decreases by $1.20 per unit and the number of units sold increases by 17%?

3. What is the revised net operating income if the selling price increases by $1.20 per unit, fixed expenses increase by $8,000, and the number of units sold decreases by 6%?

4. What is the revised net operating income if the selling price per unit increases by 10%, variable expenses increase by 10 cents per unit, and the number of units sold decreases by 7%?