College of Admission Tests Multan

Functions

Solve the question of and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 4

If f(x) = |(x2 – 175)|, what is the value of f(–10)?
  • 15
  • 275
  • 75
  • –75
  • –275

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Correct Answer: C

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If x = –10, then (x2 – 175) = 100 – 175 = –75. But the sign |x| means the absolute value of x. Absolute values are always positive.

|–75| = 75