The contribution margin income statement of Sweet Pea Donuts for August 2018 follows: : (Click the icon to view the contribution margin income statement.) Sweet Pea sells four dozen plain donuts for every dozen custard-filled donuts. A dozen plai donuts sells for $4.00, with total variable cost of $1.60 per dozen. A dozen custard-filled donuts sells for $8.00, with total variable cost of $3.20 per dozen. Requirements Data Table nou Sweet Pea Donuts Contribution Margin Income Statement Month Ended August 31, 2018 Net Sales Revenue 130,000 1. Calculate the weighted-average contribution margin. 2. Determine Sweet Pea's monthly breakeven point in dozens of plain donuts and custard-filled donuts. Prove your answer by preparing a summary contribution margin income statement at the breakeven level of sales. Show only two categories of costs: variable and fixed. 3. Compute Sweet Pea's margin of safety in dollars for August 2018. 4. Compute the degree of operating leverage for Sweet Pea Donuts. Estimate the new operating income if total sales increase by 30%. (Round the degree of operating leverage to four decimal places and the final answer to the nearest dollar. Assume the sales mix remains unchanged.) 5. Prove your answer to Requirement 4 by preparing a contribution margin income statement with a 30% increase in total sales. (The sales mix remains unchanged.) Variable Costs: Cost of Goods Sold $ 32,400 Selling Costs 17,500 2,100 52,000 Administrative Costs Contribution Margin Fixed Costs: 78,000 Print Done Selling Costs 32,400 10,800 Administrative Costs 43,200 $ 34,800 Operating Income