X=9
You add 3 to both sides which leaves you with 2x=18 and then divide by two and that gives you x=9
I can't speak to the cactus specifically, but any sphere has a surface area of

and a volume of

, so the area-to-volume ratio wold be


Where <em>r</em> is the radius of the sphere.
In decimal form that is 2.03125, in fraction that would be 65/32
Answer:
the answer would be D
Step-by-step explanation: