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Lesson 1-6/ 1-7 Writing Algebraic Expressions. To evaluate an expression, substitute a number for a variable Example 1: Evaluate 3n + 7 when n = 3. Example 2: Evaluate n ÷ 2 + n when n = 4 (use PEMDAS). Example 3: Evaluate 9 + 3p – 5t + 3 when p = 2 and t = 1
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To evaluate an expression, substitute a number for a variable Example 1: Evaluate 3n + 7 when n = 3
Example 2: Evaluate n ÷ 2 + n when n = 4 (use PEMDAS)
Example 3: Evaluate 9 + 3p – 5t + 3 when p = 2 and t = 1 (use PEMDAS)
Example 4: Evaluate m² + y/5 when m = 2 and y = 35 (use PEMDAS)
Write each phrase as an algebraic expression Example 5: 4 more than a number Example 6: the product of 20 and t
Write each phrase as an algebraic expression Example 7: the sum of 4 times a number and 2
Write each phrase as an algebraic expression Example 8: 4 times the sum of a number and 2
Write each phrase as an algebraic expression Example 9: mplus the product of 6 and n
Write each phrase as an algebraic expression Example 10: 14 less than the quantity ktimes 6