Answer:
It's D
Step-by-step explanation:
Volume=length times width times height
given
volume=576
length=12
width=6
height=?
576=12 times 6 times ?
576=72 times ?
divide both sides by 72
8=?
8 layers

When taking a polynomial modulo

, you reduce its terms' coefficients modulo

, so that, in conjunction with the result above,

For completeness, the linear term's coefficient should also get reduced in the same way as the constant term, so that
Answer:
Solution: 2x-6y divided by -24
2x=-24(-6y)
2x=6y-24
x=(6y-24) divided by 2
x=(6y-24)x 1/2
x=6y x 1/2 -24 x 1/2
x=3y-24x1/2
x=3y-12