A stated annual interest rate of 13%, compounded twice per year, is equivalent to a stated annual interest rate of compounded monthly. Mariah is receiving a small business loan of $50,000 later today. This loan has an 18% stated annual interest rate, compounded monthly. She will pay back the loan in 20 monthly payments, beginning 1 month from now. If she pays off equal amounts of the principal every month, what will her second payment be? Rekha makes an investment with a zero net present value. She pays $2100 today, and receives $300 one year from today, $800 two years from today, and. three years from today. There are no other cash flows, and her effective annual interest rate is 10%.