1.1.1 Variables and Expressions (continued)

Example 3 Evaluating Algebraic Expressions

To evaluate an expression, find the value of that expression by substituting a number for the variable (or variables) and then simplifying the resulting numerical expression, as demonstrated by Prof. Burger in Example 3.

Example 4 Recycling Application In Example 4, Prof. Burger demonstrates translating words into an algebraic expression that is evaluated for specific values of the variable to answer real-world questions.

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