Using the following info please answer the question below:

For this activity, we will use the credit card calculator from bankrate.com (https://www.bankrate.com/calculators/credit-cards/credit-card-minimum-payment.aspx) We also make these assumptions: Your credit cards interest rate (APR) is 19.9%. The minimum payment due each month is 3% of your starting balance.

Question: Esteban has a large credit card balance, such that his minimum monthly payment is $250. Every month he makes that payment and puts another $150 into his savings. His sister, Moira, says he should stop putting money into the savings account and start paying $400 per month toward the credit card debt. What do you think?