Miller Company's contribution format income statement for the most recent month is shown below: Sales (20,000 unita) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 300,000 180.000 120,000 70,000 $ 50,000 Per Unit $ 15.00 9.00 $ 6.00 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 $1,50 per unit and the number of units sold increases by 25%? 3. What is the revised not operating income if the selling price increases by $1,50 per unit fixed expenses increase by $20,000, and the number of units sold decreases by 5%? 4. What is the revised net operating income of the selling price per unit increases by 12%, vorlable expenses increase by 60 cents per unit, and the number of units sold decreases by 10%? 1. Not operating income 2. Net operating income 3. Net operating income 4. Net operating income