To calculate the finance charge on a credit card with a 19.3% APR, you divide the APR by 12 to get the monthly rate and multiply by the balance from part (a), rounding to the nearest cent. The specific finance charge cannot be determined without the balance from part (a).
To calculate the finance charge on a credit card with an annual percentage rate (APR) of 19.3%, you would need to know the balance on the credit card from part (a), which is not provided in the question. However, the general formula you can use to calculate the monthly finance charge on a credit card balance is:
Finance Charge = (APR / 12) × balance
To provide an answer, divide the APR by 12 to account for the monthly rate, then multiply by the balance given in part (a), and round to the nearest cent. Without the actual balance from part (a), we cannot compute the specific finance charge.