Nonlinear Functions

SAT Math· difficulty 4/5

If ff and gg are inverse functions, what is f(g(7))f(g(7))?

  • A

    7-7

  • B

    00

  • C

    77

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  • D

    11

Explanation

Inverses satisfy f(g(x))=xf(g(x)) = x for all xx in the domain, so f(g(7))=7f(g(7)) = 7.

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