Question

Can someone please help me with this question?

Which statement describes the end behavior of the exponential function f(x) = 2^x – 3?

For very high x-values, f(x) moves toward positive infinity.
For very high x-values, f(x) moves toward negative infinity.
For very high x-values, f(x) moves toward the horizontal asymptote.
For very low x-values of x, f(x) moves toward negative infinity.