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Miller Company's contribution format income statement for the most recent month is shown below: Total Per Unit Sales (34,000 units) $ 238, 000 $ 7.00 Variable expenses 136, 000 4.00 $ Contribution margin 102, 000 3.00 Fixed expenses 47,000 Net operating income $ 55, 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 $1.30 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 $1.30 per unit, fixed expenses increase by $6,000, and the number of units sold decreases by 6%? 4. What is the revised net operating income if the selling price per unit increases by 10%, variable expenses increase by 30 cents per unit, and the number of units sold decreases by 10%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income