Final answer:
The statement that is true about this function is: (b) (140) describes a book with 140 pages.
Step-by-step explanation:
The statement that is true about this function is: (b) (140) describes a book with 140 pages.
Since the length of a book is a function of the number of words in the book, we can use this function to determine the number of pages based on the number of words. In this case, (140) represents a book with 140 pages.
In a function where the length of a book is a function of the number of words, the input (number of words) is typically matched with the output (number of pages). So, option b) (140) describes a book with 140 pages is a valid statement in this context.