18. In 2022, Elaine paid $3,000 of tuition and $700 for books for her dependent son to attend State University this past fall as a freshman. Elaine files a joint return with her husband. Elaines AGI is $168,000.What is the maximum American opportunity credit Elaine can claim for the tuition payment and books?

19. In 2022, Amanda and Jaxon Stuart have a daughter who is one year old. The Stuarts are full-time students and they are both 23 years old. Their AGI is $31,000, consisting of $26,000 of wages and $5,000 of lottery winnings (unearned income). What is their earned income credit if they file jointly?

20. In 2022, Amanda and Jaxon Stuart have a daughter who is one year old. The Stuarts are full-time students and they are both 23 years old. Their AGI is $31,000, consisting of $8,000 of wages and $23,000 of lottery winnings (unearned income). What is their earned income credit if they file jointly?