please help me with these two questions!

Suppose that on January 1 you have a balance of $2600 on a credit card whose APR is 15%, which you want to pay off in 1 year. Assume that you make no additional charges to the card after January 1. a. Calculate your monthly payments. b. When the card is paid off, how much will you have paid since January 1 ? c. What percentage of your total payment from part (b) is interest? a. The monthly payment is $ (Do not round until the final answer. Then round to the nearest cent as needed.) You need a loan of $175,000 to buy a home. Calculate your monthly payments and total closing costs for each choice below. Briefly discuss how you would decide between the two choices. Choice 1: 30 -year fixed rate at 4% with closing costs of $2800 and no points. Choice 2: 30 -year fixed rate at 3.5% with closing costs of $2800 and 5 points. What is the monthly payment for choice 1 ? (Do not round until the final answer. Then round to the nearest cent as needed.)