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Answer:
B. y = -6
Step-by-step explanation:
As you can see the graph I done is perpendicular
Fixing two of the bits leaves four remaining positions, each with two possibilities (0 or 1), so there are

possible strings.
1. 11x + 7x = 8x
2. 15y - 20y = -5y
V = (pi)r^2h / 3
= (pi)10^2(81) / 3
= (pi)(100)(81) / 3
= (pi)(8100) / 3
= (pi)2700
So C.