Me with the a problems. i don't understand algebra that much.

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

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).

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14