Notes on Elasticity:  Read pages 90-93(top half of 93) in your text and take Cornell Notes on Elasticity.  Pay special attention to page 92 as that page shows the formulas to calculate elasticity.

Elasticity Questions:https://docs.google.com/file/d/0B_gpVfHfuRG2TE9qcjZEaXY4LWs/edit?usp=drive_web