Answer:
Your score is 100.
Step-by-step explanation:
If you have -300 and add +300 you will end up with 0 because when a positive and a negative that are equal cancel each other out. So if you add +300 to -300 you get 0 but its 400 so 300 + 100 is 400 so you have +100 left. : )
Hi,
Rectangular prism or Cuboid has a volume that can be calculated by multiplying it's dimensions.

In your case...

Answer = 60m3
Hope this helps.
r3t40
The answer is 18.975 but you might want to round that to 18.98
5y + 2y = 22
(add 2y to 5y)
7y = 22
(divide each side by 7)
y ≈ 3.1
-2y + 6y = 3
(add 6y to -2y)
4y = 3
(divide each side by 4)
y = 0.75