Test Academy | Let the function f be defined by f(x)=9+3x7−2x, then f-1(x) is 9−3x/7+2x, 7x−9/2x+3, 2x−7/3x+9, 2x−3/7x+9

Question

Let the function f be defined by f(x)=9+3x7−2x, then f-1(x) is

Options :

9−3x/7+2x
7x−9/2x+3
2x−7/3x+9
2x−3/7x+9

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