Question

medal will be given
find f(-2)

Answer 1

f(-2) means that you are meant to evaluate a function at the f(x), where f is any function. We cannot find the f(-2) for you if we don't know the function. For example

If
f(x)=2x+3
Then for the f(-2), we would simply replace all instances of x with -2
f(-2)=2(-2)+3=-1

If f(x)=x*x+6, then
f(-2)=(-2)*(-2)+6=10