Question

after 6 years, an investment is worth $8479. if the money was invested at 9% interest compounded semiannually what was the initial investment

Answer 1

P is the principal (the initial amount you borrow or deposit)
r is the annual rate of interest (percentage)
n is the number of years the amount is deposited or borrowed for.
A is the amount of money accumulated after n years, including interest.
When the interest is compounded once a year:
A = P(1 + r)^n



8479 = P (1+0.09/2)^12
8479 = P (1.69588)
P = 4999.76