Pollution occurs through the day
A and C, it could be. But flaws in the design of how a place is structured and how to go about working there is a large thing too.
T, because everybody knows that you can make your own goal by yourself, you dont have to depend on someone
2x^2-2x-12=0
2x^2-2x=12 Move 12 to the other side
4x-2x=12 Use the square
2x=12 Combine like terms
x=6 Divide by the constant