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4/6 Adv. Alg /Trig Bell Ringer

This is #10 from last night/yesterday: (-2) 2 – (-2) 3 = ? 16 12 2 -2 -8. 4/6 Adv. Alg /Trig Bell Ringer. This is #6 from last night/yesterday: If f(x) = -3x 3 + 3x 2 - 4x + 8, then f(-2) =? 16 22 28 36 52. GET AN ANSWER FOR BOTH, THEN WE’LL DISCUSS!. News and Notes.

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4/6 Adv. Alg /Trig Bell Ringer

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  1. This is #10 from last night/yesterday: (-2)2 – (-2)3 = ? • 16 • 12 • 2 • -2 • -8 4/6 Adv. Alg/Trig Bell Ringer This is #6 from last night/yesterday: If f(x) = -3x3 + 3x2 - 4x + 8, then f(-2) =? 16 22 28 36 52 GET AN ANSWER FOR BOTH, THEN WE’LL DISCUSS!

  2. News and Notes • Perfection: 4th • REPORT CARDS TOMORROW! EXTRA CREDIT!! • ACT Workshop today after school in 218.

  3. #16 IF NEEDED • What is the value of g*(g+1)2 when g = 2? • 10 • 12 • 18 • 20 • 36

  4. 2nd Period Partners – Sit with them now!

  5. 4th Period Partners – Sit with them now!

  6. Today’s Topic = Percentages and Percent Change Example 1: How do you represent the following as decimals? • 25% • 10% • 5% • 0.5%

  7. 25% • 25% = 25.00 • MOVE DECIMAL TWO SPOTS LEFT, WHY? • OR take %/100 • 25/100 = 0.25

  8. 10% • 10% = 10.00 • MOVE DECIMAL TWO SPOTS LEFT, WHY? • 10.00 • 1.000 • 0.10 • OR 10/100 = 0.1

  9. 5% • 5% = 5.00 • MOVE DECIMAL TWO SPOTS LEFT, WHY? • 5/100 = 0.05

  10. 0.5% • 5% = 5.00 • MOVE DECIMAL TWO SPOTS LEFT, WHY? • 0.5/100 = 0.005

  11. Example 2 • A t-shirt is on sale for 20% off a regular price of $50. If there is a sales tax of 5%, what is the final price of the shirt? • 0.2(50) = 10 • 50 – 10 = $40 • 0.05(40) = $2 • $40 + $2 = $42.00

  12. Example 3 • A recipe calls for 6 cups of water and 2 cups of chocolate chips. What percent of the total mixture is chocolate chips? • 6 + 2 = Total Mixture = 8 CUPS • 2/8 = 0.25 • 0.25 = 25%

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