Use the following sites to practice for the period in preparation for our test Monday.
http://www.classzone.com/cz/books/algebra_2_2007_na/resources/applications/animations/explore_learning/chapter_14/dswmedia/alg207_ch14_pg912.html
http://www.classzone.com/cz/books/algebra_2_2007_na/resources/applications/animations/explore_learning/chapter_14/dswmedia/alg207_ch14_pg917.html
www.interactmath.com
Chapter 13 sections 4-7