SOLUTION: A candle is lit and the length of the burning candle changes at a constant rate of -1.8 inches per hour. 3 hours after the candle was lit the candle was 8.7 inches long. Determi

Question 1133813: A candle is lit and the length of the burning candle changes at a constant rate of -1.8 inches per hour. 3 hours after the candle was lit the candle was 8.7 inches long.
Determine how long the candle was before it was lit.
Found 2 solutions by josgarithmetic, greenestamps:
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
Equation for the line of slope containing point (3, 8.7);
and question asks for y-intercept.

Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

At 1.8 inches per hour, the candle loses 3*1.8 = 5.4 inches in 3 hours.

If the candle is 8.7 inches long after 3 hours, then its original length was 8.7+5.4 = 14.1 inches.
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