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Miller Company's contribution format income statement for the most recent month is shown below: Total Per Unit Sales (31,000 units) $ 155, 000 $ 5.00 Variable expenses 62,000 2.00 Contribution margin 93,000 $ 3.00 Fixed expenses 49,000 Net operating income $ 44,000 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 $1.20 per unit and the number of units sold increases by 19%? 3. What is the revised net operating income if the selling price increases by $1.20 per unit, fixed expenses increase by $10,000, and the number of units sold decreases by 7%? 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 13%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income