29. Which functions among the following would require the use of the product rule to find the derivative? 10x-2 A. V = C. y = -9x18 X B. y = x sin x D. - 4 x 20\f26. What is the derivative of 8x2 + 10y2 = 2x -3y + 178 with respect to x? 2-16x-178 A. dy C. dy 2-16x dx 20y+3 dx 20y+3 B. dy 2-16x dy 2+16x+178 D. dx 20y-3 ax 20y+32. Which of the following figures is the correct illustration of the problem? Problem: An open top box is to be made from a 25 in. by 35 in. piece of cardboard by removing a square in each corner of a box and folding up the flags on each side. What size square should be cut out of each corner to get a box with the maximum volume? 25 in A. 35 in C. . 25 in |35 in B. 35 in D. X 25 in X20. Find f"" if f (x) = x4ex. A. f" (x) = x4ex + 12x3ex + 36x2ex + 24xex C. f""(x) = xex+ 16x3ex + 72x2ex + 96xe* + 24xex B. f""(x) = x4ex + 8x3ex+ 12x2ex D. f"(x) = x4ex + 20x3ex + 144x2ex + 284xex+ 24xex