The compound interest formula can be used to find the following:
TO FIND:
Total Amount (A): You will need values for P, R and n.
Compound Interest (CI): You will need values for P, R and n. To find CI: CI = A - P
Principal Amount (P): You will need values for A, R and n.
Rate (R): you will need values for A, P and n.
Number of times compounded (n): you will need values for A, P and R.