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

	Total			Per Unit
Sales (37,000 units)	$	370,000		$	10.00
Variable expenses		259,000			7.00
Contribution margin		111,000		$	3.00
Fixed expenses		47,000
Net operating income	$	64,000

Required:

(Consider each case independently):

1. What is the revised net operating income if unit sales increase by 17%?

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 21%?

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 6%?

4. What is the revised net operating income if the selling price per unit increases by 10%, variable expenses increase by 30 cents per unit, and the number of units sold decreases by 13%?