Lan mailed a package that weighed 5.63 pounds. What are the first 2 steps in rounding the number to nearest 10th? What is 5.63 rounded to the nearest tenth? PLZ keep it simple for me to understand

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.