Nonlinear Functions

SAT Math· difficulty 4/5

A function passes through (1,6)(1, 6) and (4,48)(4, 48) as exponential y=abxy = ab^x. What is bb?

  • A

    22

    check_circle
  • B

    44

  • C

    88

  • D

    33

Explanation

ab4ab1=b3=486=8\dfrac{ab^4}{ab^1} = b^3 = \dfrac{48}{6} = 8, so b=2b = 2.

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