im not sure but I think it is b
Answer:
15 friends
Step-by-step explanation:
37 - 7=30 so then you divide 30 by 2 which equals 15 so there is your answer.
Given:
f(x) = x^4 - x
g(x) = x^4 (even)
h(x) = -x (odd)
f(x) as a sum of an even function and an odd function
f(x) = g(x) + h(x)
s(x) = 1 / (x^4 - x)
s(x) as a sum of an even function and an odd function
s(x) = 1 / [g(x) + h(x)]
To find the box answer, you can divide y by x:

You can check every pair, bit I'm going to show you the first 2 as an example:

So 3/2 is the answer!