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Nonlinear Functions

SAT Math· difficulty 5/5

The table shows f(0)=1,f(1)=3,f(2)=6,f(3)=10f(0) = 1, f(1) = 3, f(2) = 6, f(3) = 10. What is f−1(6)f^{-1}(6)?

  • A

    11

  • B

    33

  • C

    22

    check_circle
  • D

    66

Explanation

f−1(6)f^{-1}(6) is the xx such that f(x)=6f(x) = 6. From the table, f(2)=6f(2) = 6, so f−1(6)=2f^{-1}(6) = 2.

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