Which of the following gives the formula for the inverse of the function x + 3 f : R \ {-7/2} → R \ {1/2},f(x) = 2х + 7 Select one: O a.f-'(x) = 3x+1 7x+2 O b.f-l(x) = 2r-6 x-7 2x+7 O c. f-'(x) x+3 O d. f-l(x) = 7x+3 2.x+1 7x-3 e. f-l(x) = 1-2х ||

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