how does a compound interest account work?
Annual Compound Interest Formula: A = P(1+r/n)^nt. If an amount of $5,000 is deposited into a savings account at an annual interest rate of 5%, compounded monthly, the value of the investment after 10 years can be calculated as follows... P = 5000. r = 5/100 = 0.05 (decimal). n = 12. t = 10.