=15000*1.06^5=20073.38366

2.
=400000*5%/(1-1/1.05^20)=32097.03488

3.
=5000/(9%/12)*(1-1/(1+9%/12)^(12*25))=595808.1108

4.
=500/(6%/12)*(1-1/(1+6%/12)^(12*35))*(1+6%/12)*(1+6%/12)^(12*35)=715916.9251

5.
=100000/8%=1250000

6.
=1500/(8%/12)*(1-1/(1+8%/12)^(12*15))*1/(1+8%/12)^(12*20)=31858.56945

7.
=15000/1.08^1+15750/1.08^2+16550/1.08^3+17700/1.08^4=53539.92729

8.
=(1+8%/12)^12-1=8.3000%

9.
b. An annuity due has payments at the beginning of each period which continue for a fixed period of time.

10.
Discounting