Aside from the information given, how can you tell which sculpture is egyptian and which sculpture is greek?

The major differences between Greek and Egyptian sculpture are that the Greeks manage to cut away as much of the background stone as possible while the Egyptians left it whole. Figures from Egyptian depicted with carved in rigid poses with legs parted as if walking. The Greek Sculpture is known as kouros, depicted a young man with often no clothes on.  

the answer is: must pay taxes on profits

since it is considered as a part of your income, profits from investments is eligible for tax payment.

the tax from your investment could be influenced by how long you decided to sell it. united states promotes keeping your investment for long term period. so, the tax rate for investments that you sell in less than one year is typically higher compared to investments that you sell in more than one year period.