I think that 30 bulbs are expected to be defective.
Three diagonals can be drawn in a hexagon mmyyy dude.
? -2 -1 0 1
-1-2=-3
The answer is -3
The angles that are congruent to one are 4,5, and 8. So the answer would be B. 5.
15x+40=-47+27
15x+40=-20
15x=-60
X=-4