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Linear Functions

SAT Math· difficulty 4/5

If f(x)=3x+af(x) = 3x + a and f(2)=11f(2) = 11, what is the value of f(0)f(0)?

  • A

    3

  • B

    11

  • C

    7

  • D

    5

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Explanation

3(2)+a=113(2) + a = 11, so a=5a = 5. Thus f(0)=a=5f(0) = a = 5.

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