An object is placed at 0 on a number line. It moves 3 units to the right, then 4 units to the left, and then 6 units to the right. What is the displacement of the object?

Take rightward movement as positive and leftward movement as negative. The total displacement is 3 − 4 + 6 = 5 units, so the object ends 5 units to the right of where it started. The correct choice is 5.

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