Given a∥b , and c is not parallel to a or b, which statements must be true? (there's more than one answer)

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

Solve: 3x+y=6 4x-2y=18 show all work !

What is x3+3x2−16x−48 divided by x−1?