Answer:
b= 4a-c
Step-by-step explanation:
There isnt an actual number you can solve for here so just say what b equals to.
4a-b=c
Move b
4a=b+c
Move C
4a-c=b
The question is asking to calculate how fast is the water level rising when the water is 9 inches deep and base on the said question or problem, and in my own understanding and computation about the said problem, the speed of the rising of the water level is 24/63 feet per minute. I hope this would help
Answer:

Step-by-step explanation:
Let h be the cylinders height and r the radius.
-The volume of a cylinder is calculated as:

-Since the cone is within the cylinder, it has the same radius as the cylinder.
-Let
be the height of the cone.
-The area of a cone is calculated as;

The volume of the solid section of the cylinder is calculated by subtracting the cone's volume from the cylinders:

Hence, the approximate area of the solid portion is 
Y=-5X which is the equation you use to figure out the answer
(8xn)+6 would be your equation. please mark me as brainiest.