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: 5

If f(x)= 2x2 + 5x – 3, then what is f(–2)?
  • –21
  • 7
  • –1
  • –5

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Correct Answer: D

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By plugging in –2 for x and evaluating, the answer becomes 8 – 10 – 3 = -5.