Please Show Work and Explain Calculations! here are income rates in relation to the problem

Refer to the individual rate schedules in Appendix C. Required: a. 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? b. What are the tax liability, the marginal tax rate, and the average tax rate for a single individual with $191,300 taxable income? c. What are the tax liability, the marginal tax rate, and the average tax rate for a head of household with $463,300 taxable income? Complete this question by entering your answers in the tabs below. What are the tax liability, the marginal tax rate, and the average tax rate for a married couple fling fointly with $68,900 taxable income? Note: Round "Average tax rate" to 2 decimal places. Married Filing Jointly and Surviving Spouse Married Filing Separately Head of Household Single ESTATE AND TRUST TAX RATES