We expanded on compound interest today, extending the concept to the idea of “compounding continuously,” which in turn led us to the fascinating mathematical constant of *e*. If you’re interested in learning more about *e*, click the link!

## Today’s links

- Homework: HW 9.9 – Compounding Continuously
- Notes
- Lesson video 1 – The is the Numberphile video we watched in class, explaining what
*e*is and some of the interesting things it does. - Lesson video 2 – Skip to the 14:30 mark for information on compounding continuously, but the first bit is a great review of other compound interest problems.

## IXL Modules

- S.9 – Exponential functions over unit intervals
- S.12 – Exponential growth and decay: word problems
- S.13 – Compound interest: word problems
**S.14 –****Continuously compounded interest: word problems**- Review modules from Algebra I level