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Nonlinear Functions

SAT Math· difficulty 2/5

Solve for xx: 3x+1=813^{x+1} = 81.

  • A

    33

    check_circle
  • B

    44

  • C

    22

  • D

    55

Explanation

81=3481 = 3^4, so x+1=4x + 1 = 4 and x=3x = 3.

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