4. Joan Student is projecting that she will owe a total of S22,750 in student loans when she graduates. The loans have an annual nominal interest rate of 4.53%, compounded monthly. The entire amount must be repaid within 10 years and she will make the equal monthly payments (120 payments) starting a month after she graduates. a. Draw the cash-flow diagram that describes this situation. b. What is the effective annual interest rate (in %)? What is her monthly payment? e