4. Carla owes $5000 on her credit card. Her statement says her minimum payment due is $150. a. What percent of the total balance owed does this minimum payment represent? b. How long it would take to pay off this debt when making $150 payment each month at 16% APR (assume no other charges are made). c. What is the total amount spent on paying off this card? d. What if instead of $150 monthly she increased it to $200 monthly. Then how long would it take to pay off?