torirenee5678 torirenee5678

28-09-2016
Mathematics

Answered

if

f(x) = 3x + 1 and f^-1 = x-1/3 ,

then f^-1(7) =

A . 22

B . 2

C . -2

Verified Answer :

kramermccauslan kramermccauslan

28-09-2016

B

You can find it by plugging 7 in for x in the f^-1(x). so, 7-1/3
6/3
2

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