Find the long run behavior of each of the following functions.
(a) As $$x \longrightarrow \infty$$, $$6(0.4)^x \longrightarrow$$
(b) As $$t \longrightarrow -\infty$$, $$11(2.4)^t \longrightarrow$$
(c) As $$t \longrightarrow \infty$$, $$0.4(2 - (0.8)^t) \longrightarrow$$