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Miller Company's contribution format income statement for the most recent month is shown below: Required: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 16% ? 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 17% 3. What is the revised net operating income if the selling price increases by $1.40 per unit, fixed expenses increase by $9,000, 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 9%