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Twice the sum of a number and 4 The sum of twice a number and 4

Stretch Those Minds What is the difference between the two? Explain your answer. Twice the sum of a number and 4 The sum of twice a number and 4.

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Twice the sum of a number and 4 The sum of twice a number and 4

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  1. Stretch Those Minds What is the difference between the two? Explain your answer. Twice the sum of a number and 4 The sum of twice a number and 4

  2. The number of hours Samantha practices swimming each week is 3 hours more than the number of hours she runs, r. This week she ran for 15 hours. Write the equation and evaluate when r=15 to find how many hours she swam.

  3. Example 1 Evaluate each expression for a = 4, b =7, and c = 2 1. a + b 2. b – c 3. ac

  4. Example 2 • Evaluate each expression for x=3, y= -5, and z= -2 • x - y 2. y2 3. -y2 4. 2x3 – 8 6. -5 + x2•4 – 1 5. -7y + 10z

  5. Example 3 Johnny has coins in pennies, nickels, dimes, and quarters. The total amount of money he has in dollars can be found using the expression (P + 5N + 10D + 25Q) ÷ 100. Use the table to find how much money Johnny has.

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