Where in the real world might you find an exponential growth or decay application? Explain why your example fits the mathematical model. for example if you climb a mountain or if you are on a plane, then the atmospheric pressure decreases as you go higher

The most frequent use of exponential growth or decay probably when you are putting your money in a bank or any investment that offer interest.

The amount of interest will be applied to the last account so the growth will be exponential. The money you put in the initial value. The interest would be the base of the exponent that determine how much it will grow. The function looks like this:

f (x) = money put on bank (100%+interest) ^time