4. A single taxpayer, age 30 , has good sight and no dependents. His adjusted gross income (AGI) is $110,000. How much will his tax liability be in 2022 assuming he takes the standard deduction? $20,421 $17,504 $14,427 $17,128 5. A taxpayer is 68 years old and of good sight. She is a substitute math teacher. She has been a widow for five years and has no dependents. Her standard deduction is: $25,900$14,700$27,300$12,950