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

	Total	Per Unit
Sales (39,000 units)	$ 273,000	$ 7.00
Variable expenses	156,000	4.00
Contribution margin	117,000	$ 3.00
Fixed expenses	49,000
Net operating income	$ 68,000

Required:

(Consider each case independently):

1. What is the revised net operating income if unit sales increase by 14%?

2. What is the revised net operating income if the selling price decreases by $1.30 per unit and the number of units sold increases by 15%?

3. What is the revised net operating income if the selling price increases by $1.30 per unit, fixed expenses increase by $10,000, and the number of units sold decreases by 3%?

4. What is the revised net operating income if the selling price per unit increases by 10%, variable expenses increase by 20 cents per unit, and the number of units sold decreases by 15%?