Trevor is a single individual who is a cash-method, calendar-year taxpayer. For each of the next two years (2020 and 2021), Trevor expects to report AGI of $80,000, contribute $8,000 to charity, and pay $2,800 in state income taxes. Required: a. Estimate Trevor's taxable income for 2020 and 2021 using the 2020 amounts for the standard deduction for both years. b. Now assume that Trevor combines his anticipated charitable contributions for the next two years and makes the combined contribution in December of 2020. Estimate Trevor's taxable income for each of the next two years using the 2020 amounts for the standard deduction c. Trevor plans to purchase a residence next year, and he estimates that additional property taxes and residential interest will cost $2,000 and $10,000, respectively, each year. Estimate trevor's taxable income for each of the next two years (2020 and 2021) using the 2020 amounts for the standard deduction and also assuming Trevor makes the charitable contribution of $8,000 and state tax payments of $2,800 in each year. d. Trevor plans to purchase a residence next year, and he estimates that additional property taxes and residential interest will cost $2.000 and $10,000, respectively, each year. Assume that Trevor makes the charitable contribution for 2021 and pays the real estate taxes for 2021 in December of 2020. Estimate Trevor's taxable income for 2020 and 2021 using the 2020 amounts for the standard deduction