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Algebra I and Concepts

Algebra I and Concepts

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Algebra I and Concepts

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  1. Algebra I and Concepts Ch. 2 Test Review

  2. Directions • Get out a piece of paper, put your name and “Ch. 2 Test Review” at the top • As each slide appears, work through the problems shown. You may not finish them all, that is ok! Don’t rush, work through what you can. • When the answer slide is posted, check your answers, find and correct mistakes. Ask questions if necessary. • Finish any questions by looking up the review on my website • This will be turn in on MONDAY with your homework

  3. Section 2-1 Translate the verbal phrases into equations • Three times r is less than 15 equals 6. • The sum of q and four times t is equal to 29. • A number n squared plus 12 is the same as the quotient of p and four.

  4. Section 2-1 Translate the verbal phrases into equations • Three times r is less than 15 equals 6. 15 – 3r = 6 2) The sum of q and four times t is equal to 29. q + 4t = 29 3) A number n squared plus 12 is the same as the quotient of p and four.

  5. Section 2-1 Change the equations into verbal phrases. • 7x – y = 23 • 3(g + 8) = 4h – 10 • J + 16 = 35

  6. Section 2-1 Change the equations into verbal phrases. • 7x – y = 23 The difference of 7 times a number x and a number y is 23 • 3(g + 8) = 4h – 10 3 times the sum of a number g and 8 equals the difference of a number h times four and 10 • J + 16 = 35 The sum of a number j and 16 is the same as 35

  7. Section 2-2: Solve the following one-step equations • 18 + x = 40 • 44 = t – 72 • -4a = 48 4) 5) 6)

  8. Section 2-2: Solve the following one-step equations • 18 + x = 40 x = 22 • 44 = t – 72 t = 116 • -4a = 48 a = -12 4) x = -54 5) r = 25 6) c = 18

  9. Section 2-3: Solve the multi-step equations • 2x – 4 = 8 • * 3) • 5(g + 8) – 7 = 103

  10. Section 2-3: Solve the multi-step equations • 2x – 4 = 8 x = 6 • r = 17 3) n = 62 • 5(g + 8) – 7 = 103 g = 14

  11. Section 2-4: Solve the equations with a variable on each side • 9x – 4 = 2x + 3 • 6.78j – 5.2 = 4.33j + 2.15 3) 3(3m – 2) = 2(3m + 3) 4) 6(3a + 1) – 30 = 3(2a – 4)

  12. Section 2-4: Solve the equations with a variable on each side • 9x – 4 = 2x + 3 x = 1 • 6.78j – 5.2 = 4.33j + 2.15 J = 3 3) 3(3m – 2) = 2(3m + 3) m = 4 4) 6(3a + 1) – 30 = 3(2a – 4) a = 1

  13. 2-4: Solve the equations with special solutions • -5(3 – q) + 4 = 5q – 11 2) 7 – 3r = r – 4(2 + r)

  14. 2-4: Solve the equations with special solutions • -5(3 – q) + 4 = 5q – 11 All real number solutions 2) 7 – 3r = r – 4(2 + r) No Solutions

  15. Section 2-5: Solve the absolute value equations and graph the solution set 1) 2)

  16. Section 2-5: Solve the absolute value equations and graph the solution set 1) x = 4 and -2 2) t = 6 and -2

  17. Section 2-6: Solve the following proportions • 2) 3) Use cross products to determine whether the following is a proportion (yes or no)

  18. Section 2-6: Solve the following proportions • 2) x = 9.8 x = -4.14 3) Use cross products to determine whether the following is a proportion (yes or no) No. 4,732 does not = 5, 082

  19. Extra: Word Problems Mrs. Huseman’s cell phone plan charges a monthly fee of $75 plus 5 cents per minute she talks on the phone. Ms. Howard’s cell phone plan charges a monthly fee of $55 plus 7 cents per minute. Set up an equation and solve to find how many minutes the two plans are equal.

  20. Extra: Word Problems Mrs. Huseman’s cell phone plan charges a monthly fee of $75 plus 5 cents per minute she talks on the phone. Ms. Howard’s cell phone plan charges a monthly fee of $55 plus 7 cents per minute. Set up an equation and solve to find how many minutes the two plans are equal. .05x + 75 = .07x + 55 x = 1,000

  21. Extra: Word Problems Chris saved twice the number of quarters that Nora saved plus 6. The number of quarters Chris saved is also 5 times the difference of the number of quarters and 3 that Nora saved. Write and solve an equation to find the number of quarters Chris and Nora saved.

  22. Extra: Word Problems Chris saved twice the number of quarters that Nora saved plus 6. The number of quarters Chris saved is also 5 times the difference of the number of quarters and 3 that Nora saved. Write and solve an equation to find the number of quarters Chris and Nora saved. 2x + 6 = 5(x – 3) x = 7, which means Nora saved 7 and Chris saved 20