Answer:

Step-by-step explanation:
The computation of the total amount of water needed could be determined by using the volume formula which is shown below:

where
L = length,
W = width,
and D = depth.
Now putting the values to the above formula
Therefore, the total amount of water needed is 
We simply applied the above formula
Answer:
Step-by-step explanation:
=
or 81.
Answer:
<em>see</em><em> </em><em>explanation</em>
Step-by-step explanation:
f(x)= -2(x²+8x+16)-5
