Please help it’s not hard

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.

Which of the following is true for the relation f(x)=2x^2+1

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2