I am not sure, but this is what I got:
<span>Pipe ALONE = 18 hours
Pipe ALONE in 1 hour = 1/18 of the pool
Hose ALONE in 1 hour = 1/25 of the pool
TOGETHER in 1 HOUR = 1/18 +1/25 = 43/450
TOGETHER they will fill the pool in 450/43 hours
So 5/6 of the pool will take 5/6 X 450/43 = 2250/ 258 = 8.7209302 hours OR
8 hours AND 43.26 minutes ANSWER
</span>
Hope this helps!
Each means to multiply I dont know if thats the word you are asking to us to define
Cereal A is a better option...Need an explanation?
Choice B:
The line intersects at both points (0,-3) and (1,0)
(I can not specifically see the number on the grid if there is any but that is what I would put for the answer based on what I see)
If you want me to explain it more I can try to! :)
I hope this helps