Final answer:
To calculate Tony's taxable income, sum his interest income and part-time job earnings, and subtract any deductions. The correct answer is $1,800. The correct option is B.
Step-by-step explanation:
To calculate Tony's taxable income, we need to calculate his total income and then subtract any deductions. Tony's total income is the sum of his interest income from Boeing Corporation bonds ($1,200) and his earnings from his part-time job ($600), which equals $1,800.
Next, we need to determine the deductions. As Tony is claimed as a dependent by his grandmother, we can assume that he does not qualify for any deductions.
Therefore, Tony's taxable income is $1,800. So the correct answer is B. $1,800.