Following is the income statement for Mueller Mufflers for the month of June 2024 E: (Click the icon to view the contribution margin income statement.) Read the requirements Requirement 1. Calculate the degree of operating leverage. (Round to four decimal places.) Select the labels and enter the amounts to calculate the degree of operating leverage for Mueller Mufflers Degree of operating leverage 1 Requirements Data Table 1. Calculate the degree of operating leverage. (Round to four decimal places.) 2. Use the degree of operating leverage calculated in Requirement 1 to estimate the change in operating income if total sales increase by 20% (assuming no change in sales price per unit). (Round interim calculations to four decimal places and final answer to the nearest dollar.) 3. Verify your answer in Requirement 2 by preparing a contribution margin income statement with the total sales increase of 20%. Mueller Mufflers Contribution Margin Income Statement Month Ended June 30, 2024 Net Sales Revenue (300 units * $125 per unit) $ Variable Costs (300 units * $50 per unit) Contribution Margin 37,500 15,000 Print Done 22,500 11,500 Fixed Costs $ 11,000 Operating Income Print Done