Name Class Date Math 153 Chapter 3Home Assignment . 7. Identify the open intervals where the function -10. x)-4x-2x+ 4 is increasing or decreasing. Determine the open intervals on which the graph of Jx)--8 is concave downward or concave upward a. decreasing on(,) b. increasing on (o, o) a. concave downward on oo, o y b. concave upward on (oo, 0); concave downward on (0, 0) c. concave upward on (o, D), concave c. decreasing on oo c. decreasing (in-oo "-- downward on (1, oo) d concave upward on o, ) e. concave downward on ( oo,0) increasing on 4 d. decreasing on o,0), increasing on concave upward on (O, oo ) ytncreasingonl-x '-í 1 1. Find all relative extrema of the function 12x+ 6 Use the Second decreasing 4 Derivative Test where applicable. a. relative max: (6, 1,302); no relative min b. relative min: (3, -75); no relative max c. relaive min: (6, 1,302), no relative max d. relative mux: (3, 75), no relative min e. no relative max or min ã¼s. Find the critical number of the function nr)--5x2 +50x +3, a. x 10 12, A model for the average typing speeds S (words d, x = 6 per minute) of a typing student after t weeks of es piven b SFd 82/ 18+ 9. Find all points of inflection on the graph of the functionxr a. 96 words per minute b. 18 words per minute e. 40 words per minute d. 164 words per minute e. 82 words per minute a. (-6, -648) b. (0,0) c. (0,0),4, -256) d. (0, D), -6, -648) e. (2,-40) Conyright Cengage Leg Powered by Cognar Page 3