Reminder: your test is on **Friday, May 24**. There will be calculator-forbidden and calculator-necessary components, so BRING YOUR CALCULATOR.

Your homework tonight is HW 9.20 – Test Review 2. Answers to all three test reviews will be posted tomorrow.

## Lesson Video Archive

**Part 1 – Simplifying Exponential Expressions****Part 2 – Exponential Modeling and Compound Interest**- Review of percent change problems from Algebra 1
- Setting up an exponential function equation to solve for the base
- Using the compound interest formula (the video’s notation is a little different from ours, but the method is the same)
- Finding the starting value for a compound interest problem
- Compounding continuously (this video starts at 14:30, and the relevant portion ends at 18:15, but watch the first 14 minutes for some more examples of compound interest questions!)

**Part 3 – Linear and Exponential Regression**

## Cumulative 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