please help solve for a, b, and c.

Vy iceva She received $104,000 in salary. She received $18,500 of dividend income. . She received $6,000 of interest income on Home Depot bonds. She received $22,500 from the sale of Disney stock that was purchased 2 years prior to the sale at a cost of $5,600 She received $15,000 from the sale of Google stock that was purchased 6 months prior to the sale at a cost of $4,500. Mary receives one exemption ($4,000), and she has allowable itemized deductions of $7,500. These amounts will be deducted fr income to determine her taxable income. Assume that her tax rates are based on Table 3.5. The data has been collected in the Microsoft Excel Online file below. Open the spreads the required analysis to answer the questions below. X Open spreadsheet a. What is Mary's federal tax liability? Round your answer to the nearest cent. Do not round Intermediate calculations. $ b. What is her marginal tax rate? Round your answer to 1 decimal place. % c. What is her average tax rate? Round your answer to 2 decimal places. % Single Individuals If Your Taxable Income Is Up to $9.225 $9,225-537,450 $37,450-590,750 $90,750-$189,750 $189,750-S411,500 $411,500-S413,200 Over $413,200 You Pay This Amount on the Base of the Bracket S 0 922.50 5,156.25 18,481.25 46,075.25 119,401.25 119.996.25 Plus This Percentage on the Excess over the Base (Marginal Rate) 10.0% 15.0 25.0 28.0 33.0 35.0 39.6 Average Tax Rate at Top of Bracket 10.0% 13.8 20.4 24.3 29.0 29.0 39.6 Married Couples Filing Joint Returns If Your Taxable Income Is Up to $18,450 S18,450-$74,900 574,900-5151,200 S151,200-S230,450 S230,450-5411,500 $411,500-$464,850 Over $464,850 You Pay This Amount on the Base of the Bracket s 0 1.845.00 10,312.50 29,387.50 51,577.50 111,324.00 129,996.50 Plus This Percentage on the Excess over the Base (Marginal Rate) 10.0% 15.0 25.0 28.0 33.0 35.0 39.6 Average Tax Rate at Top of Bracket 10.0% 13.8 19.4 22.4 27.1 28.0 39,6