Answer
Fill the blanks with
$x,\ \ x\ \ ,1,\ \ 7,\ \ [1,7]$
Work Step by Step
The solutions of the equation $f(x)=0$ are the $\fbox{ $x$ }$-intercepts of the graph of f.
The solution of the inequality $f(x)\geq 0$ is the set of x-values at which the
graph of f is on or above the $\fbox{ $x$ }$-axis.
From the graph of $f$ we fnd that the solutions of the equation $f(x)=0$ are $x=\fbox{$1$}$ and $x=\fbox{$7$}$ ,
and the solution of the inequality$ f(x)\geq 0$ is $\fbox{ $[1,7] $ } $
