Solve |x| + 7 < 4 i still need help

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°?

In which form is the following function written? y = - 2(x – 3)(x + 5)

Is this a polynomial function? i need to know asap