I saw the tax schedule that should have been attached with this question.
Taxable income $95,000 belongs to the following range:
If taxable income is over $77,100 but not over $160,850 , the tax is $15,698.75 plus 28 percent of the amount over 77,100
95,000 - 77,100 = 17,900
17,900 * 28% = 5,012
5,012 + 15,698.75 = 20,710.75
The total amount Marlene owes in taxes is $20,710.75