math  another ?  exponentials
posted by Anil .
The two formulas f(t) = Pa^t and
f(t) = Pe^rt provide two models for the same exponential growth or decay function.
How are the exact values of a and r related? (Hint: Find a formula for a as a function of r)

Pa^t = Pe^rt
Pa^t = P(e^r)^t
so, a = e^r