In 2018, Laureen is currently single. She paid $2,600 of qualified tuition and related expenses for each of her twin daughters Sheri and Meri to attend State University as freshmen ($2,600 each for a total of $5,200). Sheri and Meri qualify as Laureens dependents. Laureen also paid $1,850 for her son Ryans (also Laureens dependent) tuition and related expenses to attend his junior year at State University. Finally, Laureen paid $1,350 for herself to attend seminars at a community college to help her improve her job skills. What is the maximum amount of education credits Laureen can claim for these expenditures in each of the following alternative scenarios? (Leave no answer blank. Enter zero if applicable.)

a. Laureen's AGI is $45,000.