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10 seconds into a race, Clara was at the 25 meter mark. At 60 seconds into the race, she was at the 100 meter mark. What was the approximate rate of change in Clara's speed between 10 seconds and 60 seconds? A) .6 meters per second B) 1.5 meters per second C) 2 meters per second D) 7.5 meters per second

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Unch148

B is the correct answer

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