Subtract and simplify: (13x^2 + 2) - (4x^2 + 2x - 7)

a) 9x^2 - 2x + 9
b) 9x^2 + 2x + 9
c) 17x^2 + 2x - 5
d) 9x^2 - 2x - 5

And explain how you got it so i can understand future problems : 3

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Which graph represents the function g(x) = |x + 4| + 2?