Given two parallel lines and a transversal, at what angle do the angle bisectors of two same side interior angles intersect?

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Ineed if you could explain and give me the answer you! this needs done

Which graph corresponds to the function f(x) = x2 + 4x – 1?