AP Calculus ABhardmcq1 pt
A candle burns so that its length after hours is inches. How fast is the candle burning, in inches per hour, at hours?
A. inches/hour
B. inches/hour
C. inches/hour
D. inches/hour
Explanation
Core Concept
The burning rate is the magnitude of . At , , so the candle burns at 4 inches per hour.
Correct Answer
C inches/hour
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