CPM Homework Help : INT3 Problem 1-60

Graph and completely describe the function $f(x) = 4^x$ .

Hint:

Where is the $y$ -intercept?
Does it ever cross the $x$ -axis?

More Help:

What are its domain and range?

Answer:

Increasing curved exponential function, opening upward, horizontal asymptote at x axis, passing through the point (0, comma 1).