### Home > APCALC > Chapter 8 > Lesson 8.1.1 > Problem 8-9

8-9.

What was the stamp worth in the year 2000?

The stamp is

% of its value from the previous year.This will happen for years in a row. What was the average value of the stamp from 1989 to 2000?

If

represents the value of the stamp as a function of time (the equation you used to solve part (a)):