To construct a frequency table using the class boundaries provided, we will need to interpret the histogram in the image to estimate the frequency of highway mileages that fall within each class interval.

Given Class Boundaries:

• 16.5 - 20.5
• 20.5 - 24.5
• 24.5 - 28.5
• 28.5 - 32.5
• 32.5 - 36.5
• 36.5 - 40.5

Steps:

1. Examine the histogram to estimate how many cars (i.e., the frequency) fall into each mileage range based on the height of the bars.
2. Record the frequencies corresponding to the intervals based on the histogram data.

| Class Boundaries | Frequency | |------------------|-----------| | 16.5 - 20.5 | [Frequency for this class] | | 20.5 - 24.5 | [Frequency for this class] | | 24.5 - 28.5 | [Frequency for this class] | | 28.5 - 32.5 | [Frequency for this class] | | 32.5 - 36.5 | [Frequency for this class] | | 36.5 - 40.5 | [Frequency for this class] |

Since I don't have access to the visual details of the histogram from your image, I can't directly read the frequencies. However, you can match the height of each bar in the histogram to the corresponding class boundary and fill in the frequencies.

Once you fill in the frequencies, you will have the complete frequency table.

If you want, you can describe the approximate heights (or counts) for each bar from the histogram, and I can help finalize the table for you. Let me know how you'd like to proceed!