## University Calculus: Early Transcendentals (3rd Edition)

$$x=-1.585$$
$$3-2^{-x}=0$$ $$2^{-x}=3$$ - Draw the graph of the function $y= 2^{-x}$ - Draw the graph of the function $y=3$ - Trace the point of intersection of the 2 graphs, the $x$ value of which is the answer to the given equation. Thus, from the graph, as the point of intersection is $(-1.585,3)$, we conclude that $$x=-1.585$$