Anyone i have 3 questions plezzz . than

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take