Answer :
I think this is how you can figure out the answer.
Observe f(-1) and f(5).
As it says in the interval for every y
f(-1) < y < f(5)
there is a c such that f(c) = y.
Observe f(-1) and f(5).
As it says in the interval for every y
f(-1) < y < f(5)
there is a c such that f(c) = y.