Question 36636
They explain both.
The equation for exponential growth is: {{{y=a(1+r)^t}}} where {{{y}}} is the total amount, {{{a}}} is the initial amount, {{{r}}} is the rate, and {{{t}}} is the time
This equation can be used for bacteria growth.
The equation for exponential decay is: {{{y=a(1-r)^t}}} with the same idea
This equation can be used for finding the value of car that is constantly used.
There are more equations, but these are basic.