PDF Financial Mathematics, First Semester - lhscc.org HS 421 (Version B) Financial Math 1st Semester 1 Louisiana High School Correspondence Courses, P. O. Box 2751, Baton Rouge, LA 70821-2751 . Financial Mathematics, First Semester. Textbook . Walter H. Lange and Temoleon G. Rousos. Mathematics with Business Applications. Fifth edition. New York: Glencoe McGraw/Hill Company, 2004. ISBN: -07-829806-7