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Scientists on an oceanographic research vessel board a miniature submarine when it is at an elevation of 2 meters above the ocean's surface. The ocean floor directly beneath the boat is at a depth of 180 meters.The submarine descends at a constant rate of 0.4 meters per second. How long, in seconds, could a scientist spend descending after boarding the submarine? A. x < 455 B. x > 445 C. x > 450 D. x < 450
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