Find the long run behavior of each of the following functions. If the function goes to $\infty$ or $- \infty$ enter INFINITY or - INFINITY respectively.

(a) As $x \longrightarrow \infty$, $\ \ 4(0.7)^x \longrightarrow$

(b) As $t \longrightarrow - \infty$, $\ \ 9(2.7)^t \longrightarrow$

(c) As $t \longrightarrow \infty$, $\ \ 0.8(2 + (0.7)^t) \longrightarrow$