Clint Vans. Lecture 01: The Real Numbers Lecture 09: Formulas and Applications Lecture 12: Intersections, Unions and Compound Inequalities Lecture 19: Finding Equations of Lines Lecture 20: Mathematical Modeling with Linear Functions Lecture 25: Solving Applications: System of Three Equations Lecture 26: System of Linear Inequalities in Two Variables Lecture 34: Applications of Polynominal Equations and Functions Lecture 47: More on Division of Radical Expressions Lecture 53: Applications Involving Quadratic Equations Lecture 56: Graphs of Quadratic Functions Lecture 57: Mathematical Modeling with Quadratic Functions Lecture 61: Logarithmic Functions Lecture 63: Natural Logarithmic Functions Lecture 65: Mathematical Modeling with Exponential and Logarithmic Functions