Respuesta :

C,
It's an open dot because it's not Greater than or equal to sign
crisforp
( 6 / 7 )x > 12 ;
x > ( 12 × 7 ) / 6 ;
x > 84 / 6 ;
x > 14 ; 
x∈( 14 , + oo ) ;
The right answer is C.