Hi! You need 3 boxes because if you divide 21 1/4 / 10 you get 2 1/8 or 2.125 so you at least have two boxes. You will still have some left over after the two boxes so you will need another box for those. I hope this helped, Goodluck :)
-6a-48 that would be it because you are only distributing the -6
2squaredx3x5 is the prime factorization
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Answer:
9 lbs and 6 Oz
Step-by-step explanation:
10 + 12= 22
5+3= 8
1 lbs=16 oz
22-16=6
5+3+1=9
6 oz is left over
Hope this helps :)