The answer is surely x3 ?
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.
Answer:
3 7/8-2 5/8
<u>31</u><u>-</u><u>21</u>
8
=10/8
=1 1/4 more
It is the Multiplicative Identity Property which states, if a number is multiplied by 1, it will be that number.
For number 1a. the answer is 7 to 26 or
7:26 or

For number 2a. the answer is 8 to 28 or
8:28 or

For number 3a. the answer is 12 to 13 or
12:13 or

For number 4a. the answer is 19 to 12 or
19:12 or

For number 5a. the answer is 29 to 10 or
29:10 or

For number 6a. the answer is 11 to 28 or
11:28 or

I just did your homework