Miller Company's contribution format income statement for the most recent month is shown below: Sales (42,000 units) Variable expenses Total $ 252,000 126,000 Contribution margin 126,000 Fixed expenses 49,000 Net operating income $ 77,000 Required: Per Unit $ 6.00 3.00 $ 3.00 (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 12% ? 2. What is the revised net operating income if the selling price decreases by $1.10 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 $1.10 per unit, fixed expenses increase by $7,000, 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 20%, variable expenses increase by 20 cents per unit, and the number of units sold decreases by 9%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income