How to Solve N for Annuity Immediate and Annuity Due

1-1 2 (1-(1+i)-) Present value, annuity immediate: ani = Present value, annuity due: n i = (1+i)ami = (1+i) 1-x Future value, annuity immediate: sni= (1 + i)"an i (1+i)"-1 = = Future value, annuity due: mi = (1+i)"mji = (1 + i)(1+1}"-1 i)" = FV = K *ani +1 It is so in this question FV = K * (1 + i)" - 1 i * FV = (1 + i)" - 1 K i* FV (1+i)" K n ln(1 + i) = ln(i * FV/K+1) In(i + FV/K+1) In(1 + i) In(0.0003847 * 7000/57.01 +1) In(1.0003847) n = 119.99683 120 n = n =