What are the answer to the MC?

30) An equation of the line tangent to the graph of y = x cos zx at x = at is A)y= -(x - 71) By + n=(x-2) Outa = -(x- *) DJu - 1 =-(x - 7) 31) How many critical points does ((x) = (x - 1)3(x + 4)" have? A) 1 B) 2 C) S D) 6 32) Ify = sin?x + cos' x, then y' = A1 BJO C) 2 sin x cus x D) 4 sin x cus x 33) Ify - (5x - 2)4 A) 60(573 + 2)3 B) 4(573 + 2)3 C) 4(15x2)3 D) 60x(573 + 2)3