Question 938351
 In General for compounding Interest
{{{A(t) = P(1+r/n)^(nt)}}}
A = Accumulated Amount
P= principal = 
r= annual rate = .08
n= periods per year = 
t= years = 9yr
...
a) {{{A(9) = 9000(1.02)^(36)}}}
...
b) A = P e ^(rt) = 9000e^(.08*9 )