$3-18$ PERSONAL TAXES Mary Jarvis is a single individual who is working on filing her tax return for the previous year. She has assembled the following relevant information:

She received $$82,000$ in salary.

She received $$12,000$ of dividend income.

She received $$5,000$ of interest income on Home Depot bonds.

She received $$22,000$ from the sale of Disney stock that was purchased $2$ years prior to the sale at a cost of $$9,000.$

She received $$10,000$ from the sale of Google stock that was purchased $6$ months prior to the sale at a cost of $$7,500.$

Mary receives one exemption $($$$4,050),$ and she has allowable itemized deductions of $$7,500.$ These amounts will be deducted from her gross income to determine her taxable income.

Assume that her tax rates are based on the tax tables presented in the chapter.

a$.$ What is Mary's federal tax liability?

b$.$ What is her marginal tax rate?

c$.$ What is her average tax rate?