Miller Company's contribution format income statement for the most recent month is shown below: Sales (39,000 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 351,800 234,000 117,000 44,000 $ 73,000 Per Unit $ 9.00 6.00 $ 3.00 Required: (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 $1.30 per unit and the number of units sold increases by 16%? 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 th 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 7%