Can someone help me ?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3? f(x) = (x + 3)2 + 3 f(x) = (x + 3)2 − 6 f(x) = (x + 6)2 + 3 f(x) = (x + 6)2 − 6

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i