Jeremy (unmarried) earned $106,000 in salary and $6,300 in interest income during the year. Jeremy's employer withheld $10,000 of federal income taxes from Jeremy's paychecks during the year. Jeremy has one qualifying dependent child (age 14) who lives with him. Jeremy qualifies to file as head of household and has $29,360 in itemized deductions.

1. Determine Jeremy's tax refund or taxes due.
2. Assume that in addition to the original facts, Jeremy has a long-term capital gain of $4,120. What is Jeremy's tax refund or tax due including the tax on the capital gain?
3. Assume the original facts except that Jeremy has only $7,600 in itemized deductions. What is Jeremy's tax refund or tax due?