Practice Quiz

SAT Prep - Question List

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36. What is the value of f(4) if f(x) = (x2 − 1)/(2x − 3)?
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
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37. If f(x − 3) = (x + 2)/(x − 4), what is the value of f(x)?
  1. (x − 5)/(x − 1)
  2. (x + 5)/(x − 1)
  3. (x − 5)/(x + 1)
  4. (x + 5)/(x + 1)
  5. (x + 1)/(x − 5)
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38. Which of the following is the intersection point of y = x2 + 6x − 16 with the x − axis?
  1. ( − 2,0)
  2. (8,0)
  3. (0,2)
  4. (0, − 16)
  5. (2,0)
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39. If x⊞y = (x + y)/(x − y), x⊟y = (x − y)/(x + y), x^* = 2x/(x − y) and y^* = 2y/(x + y), what is the value of (x⊞y) − (x⊟y)?
  1. 2y
  2. 2x − 2y
  3. x^* + y^*
  4. x^* − y^*
  5. x^* y^*
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40. If x = 3 and y = − 1, what is the value of x2⊠y2, where x⊠y = x + y − xy?
  1. - 1
  2. 0
  3. 1
  4. 2
  5. 3
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