Question

Given the exponential function A(x) = P(1 + r)x, what value for r will make the function a decay function?

r = −2.1

r = 2.1

r = 0

r = 0.1 @ganeshie8

Answer 1

Is it A(x) = P(1 + r)^x ?

Answer 2

If r is negative, it's decay function and if r is positive it's a growing function.
If r = 0, it's a constant function.
Can you see why ?