A particle moves in a straight line with velocity 12 - 2t ft/s. Find the total displacement and total distance traveled over the time interval [0, 10]. Displacement: ft. Distance: -The volume of the solid obtained by rotating the region enclosed by 7 =0", y = 4x, about the line y = 0 can be computed using the method of disks or washers via an integral V = ? with limits of integration a = and b =4 2 If f is continuous and f(x) dx = 50, find f(2x) da. 0