# What do exponential growth and decay have in common?

##### 1 Answer

Mar 30, 2015

They both work with the same equation:

Where

**factor**

If the growth-factor is greater than

If it is less than

(if

**Examples:**

(1) A population of squirrels, starting at 100, grows by 10% every year. Then

(2) A radio-active material with original activity of 100, decays by 10% per day. Then