A pet shop had 8 identical fish tanks in the shape of a rectangular prisms. The width and height of each tank was (x-7) inches and the length was 8 inches more than its width. The expression below shows the maximum amount of water which all the tanks togerther can hold
8(x+1)(x-7)^2
A)The total height of all the tanks
B)The total length of all the tanks
C)The total volume of all the tanks
D)The total base area of all the tanks
I think its D if I can get @Hero to help please

Question

A pet shop had 8 identical fish tanks in the shape of a rectangular prisms. The width and height of each tank was (x-7) inches and the length was 8 inches more than its width. The expression below shows the maximum amount of water which all the tanks togerther can hold
8(x+1)(x-7)^2
A)The total height of all the tanks 
B)The total length of all the tanks
C)The total volume of all the tanks
D)The total base area of all the tanks
I think its D if I can get @Hero to help please

directrix · Answer

From the problem, it is given that the total volume of all 8 tanks is:
 the max water amount together can hold -->  8(x+1)(x-7)^2

So, isn't that a strong hint that the expression is C) the total volume of all 8 tanks?

D)The total base area of all the tanks is not correct because 8(x+1)(x-7)^2 would be cubic units and area is expressed in square units.