Miller Companys contribution format income statement for the most recent month is shown below: Total Per Unit Sales (30,000 units) $ 240,000 $ 8.00 Variable expenses 150,000 5.00 Contribution margin 90,000 $ 3.00 Fixed expenses 47,000 Net operating income $ 43,000 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 15%? 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 2%? 4. What is the revised net operating income if the selling price per unit increases by 20%, variable expenses increase by 30 cents per unit, and the number of units sold decreases by 7%?