The number sentence that applies the commutative property to the example is 4 × 3 = 12
<h3>Commutative property</h3>
Commutative property can be additive or multiplicative. It is a way of changing the position of a function or value in an expression without affecting the result
Examples are
A +B = B +A
AB = BA
Although the value were interchanged, the result were not affected. Hence the number sentence that applies the commutative property to the example is 4 × 3 = 12 since changing 3 and 4 does not affect the result
Learn more on commutative property here: brainly.com/question/778086
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The number of books that can be shelved is 45. So then we know that the amount that need to be shelved <em>can</em> be 45, if the bookshelf had 0 books on it. This means that it can have the equal part of the inequality sign.
However, the amount of book that need to be shelved cannot <em>exceed</em> 45, so b must be less than 45.
Therefore, the answer must be D) b ≤ 45.
Volume is approximately 502.65 cm^2
