Miller Companys contribution format income statement for the most recent month is shown below: Total Per Unit Sales (34,000 units) $ 204,000 $ 6.00 Variable expenses 102,000 3.00 Contribution margin 102,000 $ 3.00 Fixed expenses 45,000 Net operating income $ 57,000 Required: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 15%? 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 22%? 3. What is the revised net operating income if the selling price increases by $1.30 per unit, fixed expenses increase by $9,000, and the number of units sold decreased by 5%? 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 decreased by 15%?