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 $91,000 in salary. - She received $16,500 of dividend income. - She received $3,600 of interest income on Home Depot bonds. - She received $23,000 from the sale of Disney stock that was purchased 2 years prior to the sale at a cost of $8,200. - She received $9,500 from the sale of Google stock that was purchased 6 months prior to the sale at a cost of $6,000. Assume that her tax rates are based on Table 3.5 . 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. %