using $2024$ tax tables Determine the tax liability, marginal tax rate, and average tax rate in each of the following cases. Use the tax tables and tax rate schedules to determine tax liability. Required: a$.$ Married taxpayers, who file a joint return, have taxable income of $$92,347.$ b$.$ Married taxpayers, who file a joint return, have taxable income of $$76,462.$ Note: For all requirements, round "Average tax rate" to $2$ decimal places.