Exponential Decay (Jump to: Lecture | Video )

General Equation for Exponential Decay

Let's try an example: In 1995, a pizza parlor sold 3,495 pizzas. Since then, that number has decreased by 12% per year. Express this as an exponential Decay equation.

Figure 1.

Now, we can answer the question: How many pizzas were sold in 1999?

Figure 2.