The librarian of a small community library has compiled the number of people who visited the library and the respective number of checked-out books, and has created the line chart shown below. Interpret the chart, where the solid line is the number of visitors and the dashed line is the number of books checked out. 
Definitions:
Direct Materials
Materials that can be directly linked to the production process and form a fundamental component of the final product.
Direct Labor-Hours
The cumulative hours that employees actively participating in manufacturing processes have worked.
Predetermined Overhead
An estimated rate used in manufacturing to allocate overhead costs to products or services based on a certain activity measure.
Predetermined Overhead
An estimated overhead cost determined before the period begins for the purpose of allocating overhead costs to products or services in a more consistent manner.
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