Linear Functions

SAT Math· difficulty 2/5

If f(x)=4x9f(x) = 4x - 9, what is f(5)f(5)?

  • A

    29

  • B

    20

  • C

    11

    check_circle
  • D

    11-11

Explanation

f(5)=4(5)9=209=11f(5) = 4(5) - 9 = 20 - 9 = 11.

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