body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} You must have JavaScript enabled to use this site.

Expand menu

Minimize

Start chapters

Home

History

History

{{ item.displayTitle }}

No history yet!

Progress & Statistics

Progress

Student

Teacher

{{ courseTrack.displayTitle }}

{{ statistics.percent }}%

Sign in to view progress

{{ printedBook.courseTrack.name }} {{ printedBook.name }}

Compound Interest

Concept

Compound Interest

When money is deposited to a savings account, interest is earned, often yearly. If the earned interest is kept on the account, it will contribute to the interest earned in the future. This concept is what is called compound interest, and can be modeled using exponential growth functions.