Refer to the individual rate schedules in Appendix C.

Required:

1. What are the tax liability, the marginal tax rate, and the average tax rate for a married couple filing jointly with $68,900 taxable income?
2. What are the tax liability, the marginal tax rate, and the average tax rate for a single individual with $191,300 taxable income?
3. What are the tax liability, the marginal tax rate, and the average tax rate for a head of household with $463,300 taxable income?