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If f: R rArr R and f(x)= 4x + 3, then f^...

If `f: R rArr R and f(x)= 4x + 3`, then `f^(-1) (x)` is

A

`(x-3)/(4)`

B

`(x-4)/(3)`

C

`(x+3)/(4)`

D

none of the above

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