D Question 11 1 pts Use the first derivative test to determine the location of each local extremum and the value of the function at that extremum. f (x) = x- - 8x + 16 x - 5 O No local extrema O Local maximum at (0, 16); local minima at (4, 0) and (14, 11.11) O Local maximum at (6, 4); local minimum at (4, 0) O Local maximum at (4, 0); local minimum at (6, 4)Question 12 1 pts Solve each problem. If the price charged for a bolt is p cents, then x thousand bolts will be sold in a certain hardware store, where p-%-%. HOW many bolts must be sold to maximize revenue? 0 648 bolts 0 648 thousand bolts 0 324 bolts 0 324 thousand bolts D Question 13 1 pts Solve each problem. A rectangular field is to be enclosed on four sides with a fence. Fencing costs $3 per foot for two opposite sides, and $6 per foot for the other two sides. Find the dimensions of the field of area 750 ft2 that would be the cheapest to enclose. O 54.8 ft @ $3 by 13.7 ft @ $6 O 19.4 ft @ $3 by 38.7 ft @ $6 O 38.7 ft @ $3 by 19.4 ft @ $6 O 13.7 ft @ $3 by 54.8 ft @ $6Question 14 1 pts Solve each problem. Find the dimensions that produce the maximum floor area for a one-story house that is rectangular in shape and has a perimeter of 17cm. 0 14.17 ft x 42.5 ft 0 85 ft x 85 ft 0 42.5 ft x 170 ft 0 42.5 ft x 42.5 ft Question 15 Find the coordinates of the points of inection for the function. 2 x) = 6e" 0 {-57, 3.16) and (.57, 3.16) o {-.71, 3.16) and (.71, 3.16) o (-.71, 3.64) and (.71, 3.64) O (:57, 3.64] and (.57, 3.64)