Question 30 (1 point) Listen Find the derivative. y = (4x + 3)5 O A) dy = (4x + 3)4 O B) dy = 4(4x + 3)4 dx O C) dy = 20(4x + 3)4 O D) dy = 5(4x + 3)4 dxQuestion 31 (1 point) ) Listen Find the open interval(s) where the function is changing as requested. Increasing; y = x4 - 18x2 + 81 A) (-00, 0 ) O B) (-3, 0), (3, 00) O C) (- 3, 0) O D) ( -3, 3 )Question 32 (1 point) () Listen Use the graph to evaluate the limit. lim f(x) x-0 A) O O B) Does not exist OC) - 1 ( D) 6Question 33 (1 point) () Listen Decide if the given value of x is a critical number for f, and if so, decide whether the point for x on f is a relative minimum, relative maximum, or neither. f(x) = 3x4 - 4x3 - 12x2 + 24; x = 0 O A) Critical number, maximum at (0, 24) O B) Critical number, minimum at (0, 24) O C) Critical number but not an extreme point O D) Not a critical numberQuestion 34 (1 point) Listen Find the derivative. y = 2x4 - 9x3 - 3 ( A) 4X3 + 3x 2 O B) 8x3 - 27x2 O C) 8x 3 - 27x 2 - 7 O D) 4X 3 + 3x 2 - 7