Arra is buying $12,000 worth orare coins as an investment. s charging her ar' annual interest rate of 9.5% and is using thead on me a. If Anna pays off the coins in 36 months, what are her monthly payments? b. If she makes a down payment of $3,000, how much will this reduce her monthly payments? c. If she wants to have monthly payments of $350, how large should her down payment be? The dealer to her mon lypay ments. tocom a. Anna's monthly payments will be s (Round to the nearest cent.) b. Her monthly payments will go down to $ (Round to the nearest cent as needed.) cher down payment should be (Round to the nearest cent as needed.)