Determine the average tax rate and the marginal tax rate for each of the following instances: Use the appropriate Tax Tables and Tax Rate Schedules.

1. A married couple filing jointly with taxable income of $33,391.
2. A married couple filing jointly with taxable income of $198,265.
3. A married couple filing separately, one spouse with taxable income of $44,285 and the other with $56,618.
4. A single person with taxable income of $79,836.
5. A single person with taxable income of $306,748.
6. A head of household with taxable income of $96,992.
7. A qualifying widow with taxable income of $20,783.
8. A married couple filing jointly with taxable income of $11,616.