Outcomes
        In this lesson you will learn 
        - to use the graphs of various types of functions to model the features of an illustration of your choice 
 
        
By the end of this section students will be able to:
        - model problem situations with combinations and compositions of functions 
 
          - analyze relations, functions, and their graphs 
 
          - use tables and graphs as tools to interpret expressions 
 
          - investigate and interpret combinations and compositions of functions 
 
          - analyze and solve polynomial, rational, irrational, absolute value, and trigonometric equations 
 
          - analyze and solve polynomial, rational, irrational, and absolute value inequalities 
 
        
Prerequisites
        To be successful in this lesson, it would be helpful to know the following: 
        
        - the properties of absolute-value functions 
 
          - domain and range 
 
          - reflection symmetry 
 
          - an understanding of the types of functions encountered in this unit 
 
          - an understanding of  quadratic functions, circles, ellipses, and exponential, logarithmic and trigonometric functions 
 
          - transformations