Can someone help me with both questions please

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.

How can you find the mean absolute deviation (mad) for this set of data?