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 8 hours of burning, a candle has a height of 21 centimeters. After 19 hours of burning, its height is 15.5 centimeters. What is the height of the candle after 17 hours? Candle height centimeters (in cm) Burning time

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