Miller Companys contribution format income statement for the most recent month is shown below: Total Per Unit Sales (36,000 units) $ 252,000 $ 7.00 Variable expenses 144,000 4.00 Contribution margin 108,000 $ 3.00 Fixed expenses 44,000 Net operating income $ 64,000 Required: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 11%? 2. What is the revised net operating income if the selling price decreases by $1.40 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 $1.40 per unit, fixed expenses increase by $7,000, and the number of units sold decreases by 3%? 4. What is the revised net operating income if the selling price per unit increases by 10%, variable expenses increase by 20 cents per unit, and the number of units sold decreases by 13%?