10. Trey has two dependents, his daughters, ages 14 and 17, at year-end. Trey files a joint return with his wife. What amount of child credit will Trey be able to claim for his daughters under each of the following alternative situations?

A. His AGI is 100,000.

B. His AGI is 420,000

9. Alice is single and self-employed in 2018. Her net business profit on her Schedule C for the year is $140,000. What is her self-employment tax liability and additional Medicare tax liability for 2018