X is independent because none of the other numbers or variables affects it
Answer:
domain is all reall numbers
Answer:
(A)x ∈ B ⋃ C
(B)x ∈ B ∩ C
(C)x ∈ A ⋃ C
Step-by-step explanation:
A diagram has been created and attached for more understanding.
If the overlap of circles B and C is labeled x.
Then: 
If x is contained in the intersection of B and C, it means that:

Finally:

The correct options are A, B and C.
1/7 is bigger because a negative number is always smaller than a positive number no matter how big