NO2910 mechochphWALL (1) - Saved Problem 4-7 Mary is planning to repay a debt of 50,000 with a quarterly payment S2,400 for the next 23 quarters and a final payment of "X" dollars at the end of 24-th quarter. If the interest rate is 12% per year, compounded quarterly, how much will be Mary's final payment? A. $21,426 B. $22,176 C. $23.010 D. $23.920 Problem 4-8 Determine the value of P from the cash flows shown in table below. Interest rate = 9%. Year Cash Flow 0 1 P -4K 2 -3K 3 4 5 -2K -IK SK A. $8102 B. $7681.5 C. $9211.2 D. $7284.9 Problem 4-9 Tom started investing, as soon as he started his first job, at the rate of $400 per month as soon as get paid into a savings account that earns an interest of 1% per month. Which of the following expression may be used to determine the account value 10 years from now? A. F= [4.800(P/A, 12%, 10) [(F/P, 12%, 10)] B. F-400[(P/A, 1%, 120) (F/P, 12%, 5)] C. F= [400/0.01) (F/P, 1%, 60) D. F-400(F/A, 1%, 120)