Greg lives in New York, is a widower (his wife died in 2016), and has one child. His child, Jana, is 40 and lives with her family in California. Greg retired from his job in 2015, but continues to consult. In 2018, he had the following items of income:

• Taxable corporate bond interest income $26,000
• Municipal bond interest (exempt interest) 9,000
• Dividends (qualifying) 12,000
• Consulting fees 10,000
• Social security benefits 9,000

Greg rents his apartment, has no significant medical expenses, and pays a modest amount of state taxes. Therefore, he will take the standard deduction rather than itemize. He does have records for the following items:

• Investment expenses $ 900
• Expenses related to his consulting business 1,500

Greg also had the following gains and losses in 2018:

• Loss on the sale of 500 shared of Erc, Inc. (stock was held for three years) $(2,000)
• Loss on sale of personal auto (5,000)
• Gain on sale of ABC Inc. Stock 1,200
• Gain on the sale of unimproved land in Ipswich, Massachusetts. He held this land as an investment 35,000

Determine the following for Gregs 2018 return:

1. Gregs Schedule C income.
2. Gregs adjusted gross income.
3. Gregs taxable income.
4. Gregs 2018 tax liability.