Miller Company's contribution format income statement for the most recent month is shown below: Sales (34,000 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $272,000 170,000 102,000 45,000 $ 57,000 Per Unit $8.00 5.00 $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 18%? 3. What is the revised net operating income if the selling price increases by $1.30 per unit, fixed expenses increase by $7,000, and the number of units sold decreases by 4%? 4. What is the revised net operating income if the selling price per unit increases by 10%, variable expenses increase by 10 cents per unit, and the number of units sold decreases by 9%