Pre-knowledge of a BSTEM course Enrollment in the following courses, assumes knowledge of some algebraic skills. Bellow each course, you can find a sample of skills that that traditionally have contributed to the likelihood of success. Math 215 (Elementary Mathematics for Teachers) Problem Set Answer Key Math 238 (Business Calculus) Problem Set Answer Key Math 240 and Math 240S (Trigonometry) Problem Set Answer Key Math 245 (College Algebra) Problem Set Answer Key Math 260 (Pre-Calculus) Problem Set Answer Key Math 261 (Calculus I) Problem Set Answer Key Contact Us Office Location CMS 124 Contact Bamdad Samii, Department Chair Phone: (818) 833-3379 Margarita Padilla, Department Secretary Phone: (818) 364-7894