The circumference is about 3.14 (

) times bigger than twice the radius. Mathematically, this can be writted as

, where C equals the circumference and r equals the radius, or

where C equals the circumference and d equals the radius.
I think the answer is D because to find probability u have to count all outcomes
Vertical line, because it doesn't have an x-coordinate unit of change so the line would just be straight and vertical along the graph (0, 7).
Don't quote me on this because i am not a master at math but im pretty sure its yes because it is a rising by the same values every time it passed through a point on the graph