Sixty dollars will buy you six $10 pizzas or four $15 pizzas. This simple
relationship leads to fractions with variables in the denominator, called
rational expressions. Rational expressions give social scientists and
others who use statistics flexibility in applying formulas to their work.
These teaching notes can be printed for quick referencing.
In this chapter students will:
- learn to solve rational equations
- learn to find inverse variation
- use rational expressions to solve real-world problems
- learn to count outcomes and permutations and to determine combinations
- learn how rational expressions allow the application of formulas to statistical situations
Prerequisite Skills
- graphing ordered pairs
- analyzing data from tables
- graphing functions
- understanding functions
- simplifying expressions
- multiplying and dividing integers
- combining like terms
- solving equations
- using proportions
- solving equations by combining
- solving equations with multiplication and division
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