An Airplane is flying at an elevation of 6 miles on a flight path that will take it directly over a radar tracking station. If the distance between the plane and the station is decreasing at a rate of 400 mph when the plane is 8 miles away from being directly over the station, what is the speed of the plane?

Aresearcher believes increased perceived control influence the well-being of residents at a nursing home. to test this , she allowed one group of residents to have control over their daily lies, (where to eat etc) . the other group of 5 residents had these deceisions made by staff. the resident's feelings of well-being were measured on a 10 point scale at the end of a one month trial period. is there a difference on well-being?