Final answer:
Incomplete information about the application of APR on the credit card prevents calculating an exact balance. However, subtracting payments from the sum of the initial balance and additional charges gives an approximate balance before interest for each month.
Step-by-step explanation:
To solve this question, you must calculate the current balance on a credit card after charges and payments taking into account the Annual Percentage Rate (APR). Unfortunately, the question did not provide enough information to complete the table, as it did not specify how the APR should be applied: daily, monthly, etc. Without that information, an exact balance cannot be determined. However, we can provide a general approach to how the balance would be updated.
Starting with a balance of $560:
- First month charges: $220
- Payment: -$420
Ending balance for month 1 would be then be the starting balance plus charges minus payment: $560 + $220 - $420 = $360. To calculate the interest for the month, you would typically need to divide the APR by 12 to get the monthly rate and multiply by the average daily balance. But in the absence of this information, this is as far as we can go.
Similarly, for the second month:
- Start with the first month's ending balance: $360
- Charge: $110
- Payment: -$320
The ending balance for month 2 would be: $360 + $110 - $320 = $150, disregarding the calculation of interest.
Without the exact method of interest calculation, a precise answer cannot be provided.