Let
\[ B(t) = 4 \cdot 2^{5t - 3} - 1 \]
\[ \lim \limits _{t \to \infty } B(t) = \answer {\infty } \]
\[ \lim \limits _{t \to -\infty } B(t) = \answer {-1} \]
Let
\[ h(z) = 4 \cdot 2^{-5z - 3} - 1 \]
\[ \lim \limits _{z \to \infty } h(z) = \answer {-1} \]
\[ \lim \limits _{z \to -\infty } h(z) = \answer {\infty } \]