2. Approximate edx using the left- end rectangles with 4 equal subdivisions. 0 A. 16.453 B. 7.245 C. 34.044 D. 14.486 E. 14.4908. Determine the extrema of the function f below in the interval [-3, 3]. f(x)=5x -16x2 + 4x +2 A. f has a minimum of -14 and a maximum of 2.261. B. f has a minimum of -3 and a maximum of 3. C. f has a minimum of -289 and a maximum of 3. D. f has a minimum of -289 and a maximum of 5 E. f has a minimum of -14 and a maximum of 3 9. Locate all critical points of S(x) = (x-2)' (x-6)2. A. (2, 0) and (6, 0) B. (2, 0), (4.4, 35.389) and (6, 0) C. (2, 0), (4.4, 0) and (6, 0) D. (2, 6) E. (4.4, 35.389)11. Determine the intervals on which the function f (x) = x3 -4x' is decreasing. A. -co