Math 105-02: Calculus I: Reading Homework 5.5

1. Optimization and Modeling : what is mathematical modeling?
   
   1. Modeling : what does the book suggest doing before we try to actually solve a modeling problem? what does this mean (how is the example approached in the book)?
      
   2. Steps in Modeling : what steps (``tips'') does the book suggest for attacking modeling problems?
      
      1. examples : what are the last two examples in the text? in either case, what quantity is being minimized? how is an equation found for it?