What is the answer please help

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

He concluded that a heavier object dropped from the same height as a lighter object will land

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180