Each Mathercise book is a set of 50 blackline master 'class starters' for middle and high school math classes. Mathercise your students once or twice a week at the beginning of the class periods and you'll keep your students in shape, on track, and on time. Book E is for students taking advanced algebra, pre-calculus, or third or fourth-year high school math. Some exercises involve graphing functions, including sine and cosine functions. Answers are included.