For the function whose graph is given, state the value of the given quantity, if it exists. If it does not exist, enter "n" below.

(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)

(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)

You can earn partial credit on this problem.