Complete the passage below by selecting the appropriate terms. work mode : This shows what is correct or incorrect for the work you have completed so far. It does not indicate completion. Return to question Use lable 3.6. Note: Do not round intermediate calculations. Enter the average tax rate as a percent rounded to 2 decimal places. a. What would be the marginal tax rate for a married couple with income of $90,000? b. What would be the average tax rate for a married couple with income of $90,000? c. What would be the marginal tax rate for an unmarried taxpayer with income of $90,000 ? d. What would be the average tax rate for an unmarried taxpayer with income of $90,000