2. Which one of these functions has a domain of all real numbers

A.f(x) = 6/2x- 2
B.f(x) = v=-X
C.f(x) = v2x + 3 - 1
D.F(x) = 6x/7

2 Which one of these functions has a domain of all real numbers Afx 62x 2 Bfx vX Cfx v2x 3 1 DFx 6x7 class=