Answer:
12
Step-by-step explanation:
-2f-3=7
+2f-3=7+2
f-3=9
f+3=9+3
f=12
i think
It is probably random, since they are asking random users to identify new features they would use. :)
No graph, so cannot be precise.
But you can apply rotation 270 CCW = rotation -90 CCW
r_[90] : (x,y) -> (y,-x)
