A library needs to order bookshelves, each of which can hold...

Question Analysis
This question tests the application of the ceiling function in a real-world context, specifically for determining the number of bookshelves needed.

Key Concept Explanation
The ceiling function, , is used to round up to the nearest whole number, which is essential when dealing with discrete units like bookshelves.

Step-by-step Solution
1. Calculate the number of bookshelves needed: