Exponential Limit at Negative Infinity
What is the value of $$\displaystyle \lim_{x \to -\infty} \frac{4 \cdot 3^x + 6^x}{2 \cdot 3^x - 1}$$?
A
nonexistent
B
$$\displaystyle 2$$
C
$$\displaystyle -1$$
D
$$\displaystyle 0$$
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