### Home > CCA2 > Chapter 2 > Lesson 2.1.4 > Problem 2-63

2-63.

Below are two situations that can be described using exponential functions. They represent a small sampling of the situations where quantities grow or decay by a constant percentage over equal periods of time. For each situation:

Find an appropriate unit of time (such as days, weeks, years).

Find the multiplier that should be used.

Identify the initial value.

Write an exponential equation in the form

^{ }

A house purchased for

has an annual appreciation of . Years;

The number of bacteria present in a colony is

at noon, and it increases at a rate of per hour. This problem is similar to part (a) above.