What are the domain and range for the equation $y=2^{x}$ ?
A) Domain: $(\infty, \infty)$; range: $(0, \infty)$
B) Domain: $(\infty, \infty)$; range: $(\infty, \infty)$
C) Domain: $(0, \infty)$; range: $(\infty, \infty)$
D) $(\infty, \infty)$; range: $[0, \infty)$

Question

Quizplus · Accepted Answer

The domain of $y=2^{x}$ is all real numbers, $(-\infty, \infty)$, because you can input any real number for $x$. The range is $(0, \infty)$ because $2^{x}$ is always positive, but it never reaches 0.

What Are the Domain and Range for the Equation y=2xy=2^{x}y=2x ? A) Domain

What Are the Domain and Range for the Equation $y=2^{x}$ ?
A) Domain