Answer:
The correct option is;
a. 0
Step-by-step explanation:
The given parameters are;
f(x) = x² - 1
g(x) = √x
When carrying out operations in composite functions, we proceed as follows
Therefore, we have;
Therefore;
X+y = 20
x-y = 4
Solve: Add them two first -> 2x = 24 ->x = 12
So y = 8
Each sub will feed 3 people if they split it by 1/3
take 12 and divide by 3
12/3= 4
they'll need 4 whole subs to feed 12 people