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Class Starter8-14-13 pg. 5
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Vocabulary Variable Algebraic expression Numerical expression
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Variable A variable is a symbol, usually a letter, that represents one or more numbers. Examples: abcxyz
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Algebraic Expression
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Common Operators +-x÷+-x÷
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Numerical Expression
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Evaluate the Numerical Expression
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Fraction Bar
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Use substitution to evaluate the algebraic expression. In this case, substitution means replacing the letter (variable) with a number. Evaluate4a – 3b + 1if a = 5, b = 4, c = 8
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Evaluate each expression if m = 9, n = 2, and p = 5.
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