Courtney is a 50% partner in CD Partnership. Courtney and CD have calendar tax years. Courtneys basis in her partnership interest is $25,000 on January 1, 2018. CD Partnership sustains an operating loss of $80,000 for 2018. CD Partnership earns business taxable income of $70,000 for 2019.

1. How much can Courtney take as a business loss on her 2018 tax return? _____________________
2. What is Courtneys partnership interest basis on December 31, 2018? _______________________
3. What is Courtneys taxable income in 2019? ___________________
4. What is Courtneys partnership interest basis on December 31, 2019? ____________________