Final answer:
Paige's total taxable income is $8,200. Her tax liability is $820.
Step-by-step explanation:
Paige's total taxable income is $8,200. This is calculated by adding up her earnings from pet sitting ($3,900) and interest on a savings account ($4,300).
To determine Paige's tax liability, we first need to find her marginal tax rate based on her taxable income. Since she is a dependent and her parents' taxable income is $120,000, we can refer to the tax schedule.
Looking at the tax schedule, we find that Paige's taxable income of $8,200 falls within the lowest tax bracket. Therefore, her tax liability is calculated using the rate applicable to that bracket, which is 10%.
Using the formula: tax liability = taxable income * marginal tax rate, we can calculate Paige's tax liability. So, Paige's tax liability is $820.