Ch 23: TExES Core Subjects 4-8: Exponentials & Logarithms

About This Chapter

This chapter presents lessons that were designed to help prepare you for your upcoming Texas Examinations of Educator Standards (TExES) Core Subjects 4-8 test. The lessons are on exponentials and logarithms.

TExES Core Subjects 4-8: Exponentials & Logarithms - Chapter Summary

Let our subject-matter experts help you with exponentials and logarithms as you get ready to take the TExES Core Subjects 4-8 test. These lessons are intended as a refresher to assist you in answering test questions on topics like:

  • Exponential functions
  • Exponential decay versus growth
  • Logarithms
  • How to solve exponential and logarithmic equations

Our lesson instructors created these 5-10 minute long videos to increase your competency on exponentials and logarithms. Each lesson comes with a quiz to assess your understanding of the material you just studied. Use the video transcript provided for additional review and for quick reference to key vocabulary words. You can also go right to any specific place in the video without watching it in full using our timeline tool. Use the personal dashboard to reach out to instructors if you have any questions.

5 Lessons in Chapter 23: TExES Core Subjects 4-8: Exponentials & Logarithms
Test your knowledge with a 30-question chapter practice test
What Is an Exponential Function?

1. What Is an Exponential Function?

Brand new technologies don't always catch on right away because they can be expensive and don't always work as well as they should. But once the price comes down, and they start to work better, it doesn't take very long before it seems like everyone has one. Learn about the numbers behind this, exponential functions!

Exponential Growth vs. Decay

2. Exponential Growth vs. Decay

How is it that it only takes four years for our computer to go from top-of-the-line to almost worthless? Well, it has something to do with what's called exponential decay, which we'll learn about here!

What is a Logarithm?

3. What is a Logarithm?

Logarithms can help you solve exponential functions. In this lesson, you will learn about how to work with and recognize logarithms, and how to use logarithm notation with an example problem about earthquakes!

How to Solve Exponential Equations

4. How to Solve Exponential Equations

Read this lesson to learn the steps you need to take to solve exponential equations. You'll see that it's not too difficult; you just need to make use of one other mathematical operation in order to solve your problems.

How to Solve Logarithmic Equations

5. How to Solve Logarithmic Equations

If you're ever picking out a telescope to see your favorite planet, make sure you do the math first! Learn how to solve the logarithmic equation that will get you the size telescope you want.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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Other Chapters

Other chapters within the TExES Core Subjects 4-8 (211): Practice & Study Guide course