## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$[2,\infty)$
$\bf{\text{Solution Outline:}}$ The domain of the given function, $f(x)=\sqrt{5x-10} ,$ are all the values of $x$ for which the radicand is greater than or equal to $0.$ Express the answer in the interval notation. $\bf{\text{Solution Details:}}$ Since the radicand should be greater than or equal to zero, then \begin{array}{l}\require{cancel} 5x-10\ge0 \\\\ 5x\ge10 \\\\ x\ge\dfrac{10}{5} \\\\ x\ge2 .\end{array} Hence, the domain is $[2,\infty) .$