The view V, or distance in miles, that one can see to the horizon from a height h, in feet, is given by V = 1.28/h a) Find the rate of change of V with respect to h. b) How far can one see to the horizon from an airplane window at a height of 90,000 ft? c) Find the rate of change at h = 90,000. d) Explain the meaning of your answers to parts (a) and (c)