Answer:
3.
[5, -8] + [0, -5] + [-7, 0] + [0, -6] = [-2, -19] --> III. Quadrant
4.
[-2, 6] + [0, 3] + [5, 0] + [0, 4] = [3, 13] --> I. Quadrant
5.
[0, -5] + [-5, 0] + [0, 4] + [7, 0] + [0, -3] = [2, -4] --> IV. Quadrant
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