Final answer:
Nia's income tax liability on her $5,500 of interest income, taxed at 10 percent, would be $550.
Step-by-step explanation:
The question involves calculating the income tax liability for Nia, who is a 12-year-old with an income of $5,500 from interest. To find Nia's income tax liability, we multiply her income by her tax rate, which is 10 percent.
Therefore, Nia's tax liability can be calculated as follows:
Income Tax Liability = Interest Income × Tax Rate
Income Tax Liability = $5,500 × 0.10
Income Tax Liability = $550
This means that Nia would owe $550 in income taxes for the interest income she earned.