How long will it take for $600 to accumulate to $2500,with the rate of 12% compounded semi annually?

our lesson is about finding the time in a compound interest problem. we need to present this to our math class... I tried the formula taught to us by

our lesson is about finding the time in a compound interest problem. we need to present this to our math class... I tried the formula taught to us by our math teacher but the result seem unreasonable... i need help from you guys.

or:our lesson is about finding the time in a compound interest problem. we need to present this to our math class... I tried the formula taught to us by our math teacher but the result seem unreasonable... i need help from you guys.

or:If the principal is P then at the end of one interest period it will have accrued to P x 1.12. At the end of two periods it will be P x (1.12)^2. At the end of N periods it will be P x (1.12)^N. Now plug in the given numbers.2500 = 600 x (1.12)^N The rule is you can do any valid operation on both sides of an equation and it will still be equal. Divide by 600.4.167 = (1.12)^N log(4.167) = N x log(1.12)N = log(4.167)/log(1.12)N = 12.593Check: 600 x (1.12)^12.593 = 2500.079447This is a lot easier if you spend ten bux on a financial calculator.

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