It would be A because with volume you would have your 12 to the 3rd power then multiply it by pie which is 3.14 then for sphere you would then multiply what ever you got after multiplying 12 to the 3rd power then by 3.14 to the 4/3
The answer to this problem is 45
4(n + 2) = 8n - 20
4n + 8 = 8n - 20
20 + 8 = 8n - 4n
28 = 4n
28/4 = n
7 = n <=== ur number
