Plz help me fast it math and it a major grad 8th grad math

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

The figure below shows rectangle abcd and the triangle eca on a coordinate plane. which of the following expressions represents the perimeter of triangle of triangle eca in units

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).