Find the Domain of the Function $f(x)=\sqrt{9-2 x}$ A) $\left[\frac{9}{2}, \infty\right)$ B) $\left[-\infty, \frac{9}{2}\right]$

Multiple Choice

Find the domain of the function. Express the answer in interval notation.
- $f(x) =\sqrt{9-2 x}$

A) $\left[\frac{9}{2}, \infty\right)$
B) $\left[-\infty, \frac{9}{2}\right]$
C) $\left[-\frac{9}{2}, \infty\right)$
D) $\left(-\infty, \frac{9}{2}\right)$