Answer:
A) 3x
Step-by-step explanation:
The total of all the volumes is ...
(x -1) + (x) + (x +1) = (1+1+1)x +(-1+1) = 3x+0 = 3x . . . . . matches choice A
The answer is 12. I am 1,000,000% positive that it is the correct answer
Ok so lets plug in a first -1/3(-3) would equal 9 a is the accurate answer