C=P(1+n)rC = P(1+ n)^r C=P(1+n)r
C=P(1+rn)C = P(1+r^n)C=P(1+rn)
P=C(1+r)nP = C(1+r)^nP=C(1+r)n
C=P(1+r)nC = P(1+r)^n C=P(1+r)n