Answer:
![b=+-5\sqrt{C}](https://tex.z-dn.net/?f=b%3D%2B-5%5Csqrt%7BC%7D)
Step-by-step explanation:
![C=b^2/25](https://tex.z-dn.net/?f=C%3Db%5E2%2F25)
![25C=b^2](https://tex.z-dn.net/?f=25C%3Db%5E2)
![\sqrt{b^2}=+-\sqrt{25C}](https://tex.z-dn.net/?f=%5Csqrt%7Bb%5E2%7D%3D%2B-%5Csqrt%7B25C%7D)
![b=+-5\sqrt{C}](https://tex.z-dn.net/?f=b%3D%2B-5%5Csqrt%7BC%7D)
1 (B), because 3+-2=1, and 5+-4=1, which amounts to 1/1, or whole number 1.
There were 15 gallons of water to begin with. hope this helps
Answer:
A
Step-by-step explanation:
B IS WRONG
C IS WRONG
Answer:
11
Step-by-step explanation:
Simplify both sides of the equation.
Subtract 15 from both sides.
Divide both sides by -2.
x = 11