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If `f(x)` is an invertible function and `g(x)=2f(x)+5,` then the value of `g^(-1)(x)i s` (a)`2f^(-1)(x)-5` (b) `1/(2f^(-1)(x)+5)` (c)`1/2f^(-1)(x)+5` (d) `f^(-1)((x-5)/2)`

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