Question

based on the histogram, what is the longest time a classmate can take? 9 hours 15 hours 17 hours 18 hours

Explanation:

Step1: Analyze the histogram's x - axis

The x - axis represents the number of hours. The intervals are \(8 - 10\), \(10 - 12\), \(12 - 14\), \(14 - 16\), \(16 - 18\).

Step2: Determine the upper - bound of the last interval

The last interval on the x - axis is \(16 - 18\). In a histogram (assuming right - endpoint inclusion, which is common if not specified otherwise), the longest time a classmate can take is just less than the upper - bound of the last interval. But if we consider the maximum value within the context of the intervals shown (and no data beyond the intervals in a simple interpretation), the upper - bound of the last interval \(16 - 18\) gives the maximum value as \(18\) hours.

Answer:

18 hours