X(x-2) = 15 where x = the unknown number
If you test all the answers in that equation, both x values in answer A yield 15, so the answer is A
For example, monthly capitalization with annual rate of interest means that the compounding frequency is 12, with time periods measured in years. The effect of compounding depends on: The nominal interest rate which is applied and. The frequency interest is compounded.
That's some crazy equations...is there more to the question?
