Question 155054
Exponential function can depict both growth and decay.
An example of a growth function: {{{f(x) = a^x}}}
An example of a decay: {{{f(x) = a^(-x)}}}
Here are the graphs of both growth (red graph) and decay (green graph) functions:
{{{graph(400,400,-3,3,-2,10,5^x, 5^(-x))}}}