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

	Total	Per Unit
Sales (30,000 units)	$ 300,000	$ 10.00
Variable expenses	210,000	7.00
Contribution margin	90,000	$ 3.00
Fixed expenses	49,000
Net operating income	$ 41,000

Required:

(Consider each case independently):

1. What is the revised net operating income if unit sales increase by 20%?

2. What is the revised net operating income if the selling price decreases by $1.40 per unit and the number of units sold increases by 18%?

3. What is the revised net operating income if the selling price increases by $1.40 per unit, fixed expenses increase by $6,000, 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 10 cents per unit, and the number of units sold decreases by 13%?