Zea has a credit limit of $2,000 on her credit card. Each month, she charges about $200

Question:

Zea has a credit limit of $2,000 on her credit card. Each month, she charges about $200 and makes a payment of $125.
a. Estimate the number of months that Zea can continue this pattern until she reaches her credit limit.
b. Consider that part of the $125 Zea pays each month will be for finance charges. How will the number of months from part a be affected by these charges?