5a-9
I think this is the answer I am a little unsure of what the question is.
Looks like you have most of the details already, but you're missing one crucial piece.
is parameterized by

for
and
, and a normal vector to this surface is

with norm

So the integral of
is

Answer:
300
Step-by-step explanation:
Well, al you have to do is find the least common multiple of members and non-members.
members:9.50
non-members:14.75
is $126