# A spherical hot air balloon inflates at a rate of 101 ft/min. At what rate is the radius changing when the surface area is 20.2 ft? [Note: V = r, SA = 4r] Sex dx # Selected values for h(t) are shown in the x table. Let f(x) = h(t)dt. Find f'(4). Find the particular solution, y = f(x), to the differential equation dy cos x dx y given f()-1 and then find f 2 4 t h(t) h'(t) 23 15 1127 2 3 -5 NIM sec0 de Find the area enclosed by the graphs of f(x) 2 x and g(x) = x.