If cos x = A, cosy=B, sin x=C and siny=D, find an expression for sin(2x +y) which only involves A, B, C and D. Show and explain your work.Question 3 Suppose that g(a) 2 Question 2 In(x - 1) Let f(ac) = Find the correct statement(s). 2x - 4 Choose all that apply. O f(2) does not exist. Of (2) = 0.5 . O The point (2 , 0.5) is on the graph of f . O The graph of f has a hole at x= 2.Question 4 The following is the graph of y = f(a). 2 -3 -2 -1 0 1 2 -1 -2 Choose all correct statements below. O lim f(ac) = 0 O lim f(ac) = -1 O lim f(ac) = -1 r-1 O lim f (ac) = -1 O lim f(ac) = -1