will seek in vain for a formula they feel strongly should be included. Please send suggestions for amendments to the Secretary of the Teaching Committee, and they will be considered for incorporation in the next edition. The Secretary will also be grateful to be informed of any (equally inevitable) errors which are found.

*ADVANCED PLACEMENT CHEMISTRY EQUATIONS AND CONSTANTS Throughout the test the following symbols have th e definitions specified unless otherwise noted. k = rate constant t = time t½ = half-life ADVANCED PLACEMENT CHEMISTRY EQUATIONS AND CONSTANTS Throughout the test the following symbols have th e definitions specified unless otherwise noted.*Meet one of our writers for AP®︎ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP®︎ Statistics. Today he's hard at work creating new exercises and articles for AP®︎ Statistics. REA’s AP Macroeconomics Crash Course is the first book of its kind for the last-minute studier or any AP student who wants a quick refresher on the course. The Crash Course is based on a careful analysis of the AP Macroeconomics Course Description outline and actual AP test questions released by the College Board.