This program coordinates with Elementary Linear Algebra, 12th edition by Howard Anton and Anton Kaul and with the first nine chapters of Elementary Linear Algebra, Applications Version, 12th edition by Howard Anton, Chris Rorres, and Anton Kaul. Working line by line through the text, the authors have identified virtually every key concept and posed a question to test your understanding of it. This program is not intended to teach problem solving; rather, its goal is to ensure that you have mastered the concepts that are essential for successful problem solving.