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Mathematics, 14.05.2021 22:50 noeminm105

Ian spends a winter day recording the temperature once every three hours for science class. At 9am, the temperature was -13.2°F. Between 9am and noon, the temperature increased by 8.4°F. Between noon and 3pm, the temperature dropped 11.6°F. Between 3pm and 6pm , the temperature dropped 12.8°F. What was the temperature at 6pm?

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