Problem 2 In computing the equivalent present worth of the following cash flow series at period 0, which of the following expression is incorrect?
A. P = $ 100(P/A,i,4)(P/F,i,4)
B. P = $ 100(F/A,i,4)(P/F,i,7)
C. P = $ 100(P/A,i,7)  $ 100(P/A,i,3)
D. P = $100[(P/F,i,4) + (P/F,i,5) + (P/F,i,6) + (P/F,i,7)]


Problem 3 To withdraw the following $ 1,000 payment series in the figure, determine the minimum deposite (P) you should make now if your deposits earn an interest rate of 10 % compounded anually. Note that you are making another deposite at the end of year 7 in the amount of $ 500. With the minimum deposit P, your balance at the end of year 10 should be 0.
A. P = $ 4,912
B. P = $ 4,465
C. P = $ 5,374
D. P = $ 5,912 
