In this lesson I will teach you about compound interest. Compound interest is used everywhere in the real world. In the lesson I will explain the differences between compound and simple interest. To solve compound interest problems you need to know how to work with powers and exponents. Hence, if you need to review the rules of powers and exponents go ahead before watching the lesson. One last interesting thing about compound interest, Albert Einstein once called it “the most powerful force in the universe”- I hope that inspires you to work hard to master the topic.