The taxable income Tammy made last year was $25,000.
For the first $9,500, the income tax rate is 10%. That is;
[tex]\frac{10}{100}\times9500=950[/tex]Also, 14% for amount over $9,500. That is;
[tex]\begin{gathered} 25000-9500=15500 \\ \frac{14}{100}\times15500=2170 \end{gathered}[/tex]Thus, the total income tax Tammy paid last year was;
[tex]950+2170=3120[/tex]CORRECT ANSWER: $3,120