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1 2 Variables
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1 2 Variables

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Transcript

  • 1. Variables Chapter 1.2 Pages 11-15
  • 2. Warm Up Activity
    • Sasha wanted to leave the waiter and 20% tip. The bill for the meal was $23.50. How much did Sasha leave on the table?
    • A triangle has two sides that are congruent (equal) in length.
      • How many angles are congruent?
      • Name the triangle.
  • 3. First Grade Algebra
    • + 6 = 16
    • 5 + = 9
    • - 5 = 5
    • 8 - = 2
  • 4. Fill in the missing box. The BOX was the variable.
  • 5. What is the variable?
    • x + 6 = 16
    • 5 + t = 9
    • n - 5 = 5
    • 8 - r = 2
  • 6. Fill in for the variable.
    • John makes $7.00 per hour (h) but chooses to pay a uniform cleaning fee of $3.00 each day he works. How much does he make each day? …
  • 7. $7(h) - $3 7(8) - 3 8 7(6) - 3 6 7(4) - 3 4 Day’s Pay Calculation Number of hours
  • 8. $7(h) - $3 $55 7(8) - 3 8 $39 7(6) - 3 6 $25 7(4) - 3 4 Day’s Pay Calculation Number of hours
  • 9. Write an expression
    • Nancee pays $1.50 to ride the bus each way. She makes $20 each night she sits for her young cousin. How much does she make? Sometimes she gets a ride home for free from her brother.
  • 10. Let (r) be the number of rides she needs.
    • r * $1.50 = $3.00
    • r * $1.50 = $1.50
    • Subtract bus fare from the total earned…
  • 11. $20 - 1.5r
    • The order of operations states, do the multiplication first, then subtract.
  • 12. Solve for x. Guess and test.
    • 4x + 3 = 47
    • 7x – 12 = 44
  • 13. These work
    • 4(11) + 3 = 47
    • 7(8) – 12 = 44
  • 14. Pens cost $.30 Pencils cost $.20
    • How much for 10 pencils?
    • How much for 2 pens and 4 pencils?
  • 15. Total Bill
    • 10 (.20) = $2
    • 2(.30) + 4 (.20) =
    • (.60) + (.80) =
    • $1.40
  • 16. Your Assignment
      • Page 16 – 17
      • # 11-37, and 45 odds

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