They were incredibly talented and skilled at art. evidence of history of their artwork, plus it shows a different form of currency.
I would say C just because he was helping more of the children's sake
A local speed limit is an example of a real world situation that cam be mathematically represented by inequalities.
For example, if the local speed limit is 45 mph, you can write:
Speed ≤ 45 mph.
This notation means that speed is less or equal to 45 mph