Exercises 17.2, page 479

  1. 1. x ≤ 5

  2. 3. 1 < x < 92

    A number line is shaded between open circles at 1 and 9 over 2.
  3. 5. x >  − 1

    A number line is shaded to the right of an open circle at negative 1.
  4. 7. x < 64

    A number line is shaded to the left of an open circle at 64.
  5. 9. x ≤  − 2

    A number line is shaded to the left of a closed circle at negative 2.
  6. 11. y <  − 2

    A number line is shaded to the left of an open circle at negative 2.
  7. 13. x ≤ 52

    A number line is shaded to the left of a closed circle at 5 over 2.
  8. 15. x <  − 17720

    A number line is shaded to the left of an open circle at negative 177 over 20.
  9. 17. x >  − 1.80

    A number line is shaded to the right of an open circle at negative 1.80.
  10. 19. L >  − 79

    A number line is shaded to the right of an open circle at negative seven-ninths.
  11. 21.  − 1 ≤ x ≤ 1

    A number line is shaded between closed circles at negative 1 and 1.
  12. 23. 2 < x ≤ 5

    A number line is shaded between an open circle at 2 and a closed circle at 5.
  13. 25.  − 3 ≤ x <  − 1

    A number line is shaded between a closed circle at negative 3 and an open circle at negative 1.
  14. 27. No values

    A blank number line.
  15. 29. x < 52

    The calculator graph of a horizontal line that extends to the left of (5 over 2, 1).
  16. 31. x ≥  − 1

    The calculator graph of a horizontal line that extends to the right of (negative 1, 1).
  17. 33.  − 2 < t < 2

    The calculator graph of a horizontal line segment that extends from (negative 0.2, 1) to (0.2, 1).
  18. 35. x >  − 12

    The calculator graph of a horizontal line that extends to the right of (negative one-half, 1).
  19. 37. x ≤ 0

    A calculator graph of a horizontal line that extends to the left of (0, 1).
  20. 39. x ≥ 5

    A number line is shaded to the right of a closed circle at 5.
  21. 41.  − 6 < k < 6

    A number line is shaded between open circles at negative 6 and 6.
  22. 43. a = 3 ,  b = 11

  23. 45.  = 

  24. 47. 3.2% < I < 4.8%

  25. 49. n > 35 h

    A number line with an open circle at 0, and shading to the right of an open circle at 35.
  26. 51. 50 °  < F < 68 ° 

    A number line is shaded between open circles at 50 and 68.
  27. 53. 0.54 m  < w < 0.81 m

    A number line is shaded between open circles at 0.54 and 0.81.
  28. 55. 0.4 < t < 2.6 h

    A number line is shaded between open circles at 0.4 and 2.6.
  29. 57.

    0 ≤ x ≤ 500200 ≤ y ≤ 700

    A number line is shaded between closed circles at 200 and 700.
  30. 59. 2 min  ≤ stop times ≤ 4 min

    A number line is shaded between closed circles at 2 and 4.
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