\left[y \right] = \left[ 0\right][y]=[0] I hope helping with u
Answer:

Step-by-step explanation:
V=Tr^2h
V / T = r^2 h
V / Th = r^2
√V / Th

Answer: The second option
Answer:
Top right graph.
Step-by-step explanation:
The graph of f(x) = x has a slope of 1, and is increasing to the right until the point where x = -1.
The graph of f(x) = -x has a slope of -1 decreasing to the right from the point where x = -1.
The clear small circle means that the point is not included in the function ( because of the '<' ).
The filled circle means it is included ( the '≥').