Answer:
B) 
Step-by-step explanation:
−x + 3 = 2x - 3
-2x - 2x
______________
−3x + 3 = −3
- 3 - 3
____________
−3x = −6
___ ___
−3 −3
[Plug this back into both equations above to get the y-coordinate of 1]; 
I am joyous to assist you anytime.
If i'm correct you should add 0.5 mL to your 1 gallon tank, and I would say about 1.25 mL to your 2.5 gallon. It will not be extreme if you end up putting a little more in than you are supposed to. I'm not 100% because i haven't slept so my brain is being slow.
Answer:
The answer is 50% increase. Hope this helped!
Step-by-step explanation:
Well, they're both divisible by 2 (24 ÷ 2 = 12) (90 ÷ 2 = 45)