中等math-u01-d04
$8000 is invested at 3% per annum with interest compounded annually. After 2 years the amount is:
A. 8000 x 1.03^2 dollars✓ 答案
B. 8000 x 1.06 dollars
C. $8480
D. 8000 x 0.97^2 dollars
解說
Compound interest multiplies the growth factor each year, so A = 8000(1.03)^2. Simple interest would give 8000 + 2 x 0.03 x 8000 = 8480, which is not the same as compounding.