Miller Company's contribution format income statement for the most recent month is shown below: Total Per Unit Sales (31,000 units) $ 217, 000 $ 7.00 Variable expenses 124, 000 4.00 Contribution margin 93 , 000 $ 3.00 Fixed expenses 44 , 000 Net operating income $ 49, 000 Required: Consider each case independently): 1. What is the revised net operating income if unit sales increase by 17%? 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 21%? 3. What is the revised net operating income if the selling price increases by $1.50 per unit, fixed expenses increase by $6,000, 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 12%