Concept explainers
Average Daylight Hours The number of hours of daylight per day in Washington, D.C.,
The graph of this function is sketched in Fig. 13.
How many hours of daylight are there after
After
When is there
When is the number of hours of daylight increasing at the rate of
When are the days longest? Shortest?
When is the number of hours of daylight increasing fastest? Decreasing fastest?
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