Apply the compound interest formula:
A = P (1 + r/n)^ nt
Where:
A=amount after n years
P = initial principal = 1000
r= interes rate ind ecimal form = 8/100 = 0.08
n= number of times the interest is compounded annualy = 1
t= years
a. After 10 years:
A = 1000 (1 + 0.08)^10
A = 1000 (1.08)^10
A= $2,158.93
b. interest earnt
2,158.92 - 1000 = $1,158.93