This workbook in Advanced Algebra and Trigonometry seeks to develop mastery mathematics skills. The major goal of the authors in writing this workbook is to present, develop critical thinking and problem solving skills, implement discovery and inquiry-based learning, improve cooperative learning, constructivism, impose reflective learning, experiential and situated learning of the junior high school students in a simple and understandable language.Exercises are based on the topics listed in the official curriculum guide of all Junior High School. These are:1. Linear System.2. Functions and their graphs.3. Polynomial Functions.4. Rational Functions.5. Exponential and Logarithmic Functions.6. Trigonometric Functions.7. Applications of Trigonometric Functions. It is expected that through this workbook in Advanced Algebra and Trigonometry mathematics education will be made fruitful for the junior high school students.