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A candle is lit and the length of the burning candle changes at a constant rate...

A candle is lit and the length of the burning candle changes at a constant rate of -1.9 inches per hour. 2 hours after the candle was lit the candle was 8.7 inches long.

a. Determine how long the candle was before it was lit. inches

b. Write a formula that expresses the remaining length of the candle in inches, L , in terms of the number of hours t that have elapsed since the candle was lit.

Math   Precalculus   
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