Answer:
8<em>x</em> + 25
Step-by-step explanation:
In the second photo.
Let
x--------> the number of children
y------> the number of teenagers
z------> the number of adults
we know that
------> equation A
-----> equation B

-------> equation C
Substitute equation C in equation A and equation B
![2[\frac{4}{3}y]+3y+5z=1,950](https://tex.z-dn.net/?f=2%5B%5Cfrac%7B4%7D%7B3%7Dy%5D%2B3y%2B5z%3D1%2C950)
--------> equation D
![[\frac{4}{3}y]+y+z=570](https://tex.z-dn.net/?f=%5B%5Cfrac%7B4%7D%7B3%7Dy%5D%2By%2Bz%3D570)
--------> equation E
Multiply equation E by 
--------> equation F
Adds equation D and equation F

therefore
<u>the answer is the option</u>

By definition, the volume of a quarter of a sphere is given by:

Where,
r: sphere radius
Substituting values we have:

Making the corresponding calculation we have:
Answer:
The volume of the quarter-sphere shaped tank is:
She earns twenty one dollars a hour regularly half of that is ten dollars and fifty cents . Add this to twenty one equals thirty one fifty a hour times eight equals two hundred and fifty two dollars for working on Sunday for eight hours .