Application Of Derivatives

$\mathrm{f}(x)$ is decreasing in $(-\infty, 10]$ and increasing in $[10, \infty)$

$f(x)$ is increasing in $(-\infty, 10]$ and decreasing in $[10, \infty)$

$\mathrm{f}(x)$ is increasing throughout real line

$\mathrm{f}(x)$ is decreasing throughout real line