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1. If a married couple who files jointly has taxable income of $164,735 in 2019 with no capital gains nor qualified dividends nor tax credits, what is their income tax liability for 2019.
2. Zach Morton is self employed as a plumber for all of 2019. Zach is also an employee of Overnight Security on the weekends. For 2019, Zach received a w-2 from Overnight showing $29,000 in income. Overnight does not provide any health insurance. Zachs plumbing business has 42,000 in revenue and 18,000 in expenses. Zach purchases health insurance during 2019 and pays $210 per month for all 12 months. If these are the only items of income and expense for 2019, what is Zachs AGI in 2019?

3. Jack Sprat has adjusted gross income of $39,000. During 2019, Jack contributed $4,000 in cash to his church and stock with a fair market value of $26,000 to the Girl Scouts. The stock had cost Jack $16,000. What are Jack's choices with regard to his contribution deduction for 2019 and how does each choice affect future years?