A lighted candie burns outr according to the equation y'(1) =ky (1) where y is the length (in inches) of the candle at any given time (in hours). An 8-inch candle is reduced to half-length after 10 hours. Estimate the length of the candle after 7 hours. O 35 inches O 56 inches 2.8 inches O 4.9 inches

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