Patty Schwarzkopf. Lecture 05: Equivalent Algebraic Expressions Lecture 11: Sets, Interval Notation and Inequalities Lecture 14: Graphs and Equations Lecture 17: Linear Functions: Graphs and Slope Lecture 18: More on Graphing Linear Equations Lecture 21: System of Equations in Two Variables Lecture 31: Factoring Trinominals Lecture 37: Division of Polynominals Lecture 42: Variation and Applications Lecture 45: Simplifying Radical Expressions Lecture 49: Applications Involving Powers and Roots Lecture 54: More on Quadratic Equations Lecture 55: Graphs of Quadratic Functions Lecture 59: Exponential Functions Lecture 67: Conic Sections: Ellipses Lecture 68: Conic Sections: Hyperbolas