Miller Company's contribution format income statement for the most recent month is shown below: Sales (37,000 units) Variable expenses Contribution margin Total $ 222,000 111,000 111,000 Per Unit $ 6.00 3.00 $ 3.00 40,000 Net operating income $ 71,000 Required: Fixed expenses (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 20%? 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 decreases by 7% 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 7% ? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income