Carla walks 7 km west, 4 km south, 3 km east and 1 km north. In which direction is she from her starting point?
Correct answer: A. Southwest
Net movement: 7 − 3 = 4 km west and 4 − 1 = 3 km south. She is to the southwest of the start, 5 km away by the Pythagorean theorem.
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