The conclusion that can be drawn about the number of books supplied for $16 when an important production input of books increases is that the quantity supplied is reduced.
When production costs (input) increase, the quantity supplied at a given price decreases.
Conversely, a decrease in production costs increases the quantity supplied.
Thus, the conclusion that can be drawn about the number of books supplied for $16 when an important production input of books increases is that the quantity supplied is reduced.
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