I think so 12 to 13 minutes will it take to use all sheets..
<em>km</em>=<em>x, </em>the product being represented by <em>x.
</em><em>
</em>

The last choice is appropriate.
Answer:

Explanation:
All the other expressions can be factorized. Let's see why:
1) 
This is the sum of the cubes, and this can be factorized as follows:

In this case, a=m and b=1, so we can factorize as

2) 
This is the difference between two cubes, and this can be factorized as follows:

In this case, a=m and b=1, so we can factorize as

3) 
This is the difference between two square numbers, and it can be factorized as follows

In this case, a=m and b=1, so we can factorize as

Answer:
1996.66.......
Step-by-step explanation: