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Mathematics, 29.03.2021 15:30 panpanriser76

Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 15 hours of burning, a candle has a height of 18.5 centimeters. After 31 hours of burning, its height is 13.7 centimeters. What is the height of the candle after 21 hours?

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