That's false. Coinage is the responsibility of the US mint.
That's why the process is called "minting" and not "reserving".
Parallel lines have the same slope so you first have to identify the slope of the lines.
The first lines has a slope of 4 and the second line has a slope of 2.
This means the lines are NOT parallel
Yes that statement is correct because 12 is half of 24 and 2 is half of 4
3.64 is the estimated difference
It is Nonresponse. We can infer that the entire population cannot be made.