N is the variable I believe.
Step-by-step explanation:
1. x^2 + 10x + 25
2. x^2 - 25
.........
The typical tip would be 19.5, you get this from solving or searching up 15% of 130 equaling to 19.5
Using the change in base property, we have
approximately.
The volume of water that goes into the hose is the same as the volume of water that comes out the nozzle. This means the velocity is inversely proportional to the area. The area is proportional to the square of the diameter.
Taken together, these facts mean that if the diameter is divided by a factor of 3, the velocity is multiplied by a factor of 3^2 = 9.
Nozzle velocity = 3^2 * entering velocity
.. = 9 * (4 m/s)
Nozzle velocity = 36 m/s . . . . . . . . . corresponding to selection A
