Population growth is believed to be continuous overtime and there is an increase in growth rate over time. This scenario illustrates the exponential function. Population growth of organisms, growth of money in the bank, as well as decay of a substance, are some of the occurrences where exponential functions are used. Exponential function belongs to the so-called transcendental functions because they cannot be expressed by a finite number of algebraic operations.

In this learning module, you will familiarize more about exponential function, and how the concept of an exponential function is utilized in our daily life. This module was designed and written with you in mind. It is here to help you master representing and solving real-life situations using exponential functions.

After going through this module, you are expected to:

1. Define exponential functions;

2. Show illustrations of exponential functions that represent real-life situations;

3. Represent real-life situations using the exponential functions; and

4. Solve problems involving real-life situations using the exponential functions.

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