Answer:
The range is (0, ∞) and the domain is all real numbers, or (-∞, ∞). Also, the asymptote is at x=0, not x=-2.
Explanation:
If you graph 5^x, you can see that the left side of the function is approaching zero, but never touches or crosses. It goes on forever without touching it, and since it extends forever in both directions, the domain (x-values) is all real numbers. As for the range, the y-value is never zero, only very close, and the right side of the equation extended up forever, making the range (0, ∞). The paren is used for 0 because 0 is not included in the value.
Hopes this helps!