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 $$85,000$ in salary.

She received $$10,000$ of dividend income.

She received $$5,300$ of interest income on Home Depot bonds.

She received $$21,000$ from the sale of Disney stock that was purchased $2$ years prior to the sale at a cost of $$8,500.$

She received $$15,000$ from the sale of Google stock that was purchased $6$ months prior to the sale at a cost of $$7,600.$

Assume that her tax rates are based on Table $3\mathrm{.}5.$

a$.$ What is Mary's federal tax liability? Enter your answer as a positive value. Do not round intermediate calculations. Round your answer to the nearest cent.

$

b$.$ What is her marginal tax rate? Do not round intermediate calculations. Round your answer to one decimal place.

$\%$

c$.$ What is her average tax rate? Do not round intermediate calculations. Round your answer to two decimal places.Single Individuals

Notes:

These are the $2020$ tax rates that will be paid on tax returns due April $15,2021.$ The income ranges at

which each tax rate takes effect are indexed with inflation, so they change each year.

The average tax rates are always below the marginal rates, but in $2020$ the average at the top of the

brackets approaches $37\%$ as taxable income rises without limit$.$

In $2018,$ the personal exemption for the taxpayer and dependents was eliminated. With the deduction

limitation on state and local property, income, and sales taxes and the existence of payroll taxes $($Social

Security and Medicare taxes$),$ the $2020$ effective tax rate will be higher than $37\%.$