Each day, the manager at Jamie's Auto Care Shop prepares a frequency distribution and a histogram of sales transactions by dollar value of the transactions. Friday's histogram follows: 
On Friday, the approximate number of sales transactions in the 75-under 100 category was ___.
Definitions:
Variability
Variability refers to the extent to which data points in a statistical distribution or set differ from each other and from the mean of the set, indicating the spread or dispersion of the dataset.
Brain Scans
Imaging techniques, such as MRI or CT scans, used to visualize the structure or function of the brain.
Functional Magnetic Resonance Imaging
A neuroimaging technique that measures brain activity by detecting changes associated with blood flow, used to understand brain function.
Blood Oxygen
The level of oxygen saturation in the blood, an important indicator of respiratory and circulatory system health.
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