<span>2x(3x + 2y)
=6x^2 + 4xy</span>
V=1/3πr^2h
d=3.6 in.
r=1.8 in.
V=1/3×π×1.8^2×3
V≈10.1736 cubic inches. As a result, the volume of the funnel is 10.1736 cubic inches. Hope it help!
let
x--------> the monthly fee
y--------> the administration fee
we know that
--------> equation 
--------> equation 
Multiply by
equation 
------> equation 
Adds equation
and equation 

Find the value of y

therefore
the answer is
the administration fee is equal to 