Miller Company's contribution format income statement for the most recent month is shown below Total Per Unit Sales (20,000 unita) Variable expenses Contribution margin Fixed expenses Net operating income 300,000 15.00 180,000 120,000 6.00 70.000 $ 50,000 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 $1.50 per unit and the number of units sold increases by 25%? 3. What is the revised net 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 if the selling price per unit increases by 12%, variable expenses increase by 60 cents per unit, and the number of units sold decreases by 10%? 1. Net operating income Net operating income 3. Net operating income 4. Net operating income