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

	Total	Per Unit
Sales (37,000 units)	$ 333,000	$ 9.00
Variable expenses	222,000	6.00
Contribution margin	111,000	$ 3.00
Fixed expenses	40,000
Net operating income	$ 71,000

Required:

(Consider each case independently):

1. What is the revised net operating income if unit sales increase by 19%?

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 18%?

3. What is the revised net operating income if the selling price increases by $1.30 per unit, fixed expenses increase by $8,000, and the number of units sold decreases by 7%?

4. What is the revised net operating income if the selling price per unit increases by 20%, variable expenses increase by 10 cents per unit, and the number of units sold decreases by 11%?