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1. Multiple choice questions: circle ONE answer. No justification is needed. (a) [2] Start with the graph of y = cosx. Scale (expand) the graph horizontally by a factor of 3 and then shift right the graph you obtained by 6 units. Finally, expand this graph vertically by a factor of 4. The graph you obtained is (A) y = - Cos x + 2 x - 2 4 6 (B) y = - x + 6 COS 6 (C) y = 4 cos 3 (D) y = 4cos 2 (E) y = 4 cos aC + 6 (F) y = 4 cos (G) y = 2 + 2 2 - 6 COS 3 (H) y = 1 COS 3