Required: 1. What is the monthly break-even point in unit sales and in dollar sales? (Do not round intermediate calculations.) 2. Without resorting to computations, what is the total contribution margin at the break-even point? 3-b. Verify your answer by preparing a contribution format income statement at the target sales level. 4. Refer to part 3 and now assume that the tax rate is 30%. How many units would need to be sold each month for an after-tax target profit of $95,400 ? (Round the final answer to the nearest whole number.) 5. Refer to the original data. Compute the company's margin of safety in both dollar and percentage terms. (Round your percentage answer to 2 decimal places.) 6. What is the company's CM ratio? If sales increase by $53,000 per month and there is no change in fixed expenses, by how much would you expect monthly net operating income to increase? (Round your percentage answer to 2 decimal places and other answer :o the nearest whole dollar amount.)