Question

http://gyazo.com/abc2796d7942ceb93691eb90b2538cd2

Please help with that question!

Answer 1

x<-1

Answer 2

which one of those means that x<-1?

Answer 3

hint 6-7=-1

Answer 4

the number line shows 'x' moving towards negative infinity from "-1" onwards. it refers that x can be any value less than '-1'. however, there is a hollow dot at x=-1. this means x cannot take the value '-1' itself.
so. answer x<-1

now option B simplifies to the above. so. B it is!