Answer
The gross salary $G$ of Tiffany as a function of the number of items sold $(x)$ is $G\left( x \right)=100+10x$.
Work Step by Step
The gross salary $G$ of Tiffany is given by,
$G=\operatorname{base}\,\,pay+10\times \text{number of items sold}$.
$G=100+10\times \text{number of items sold}$.
If the number of items sold is $x$, then $G\left( x \right)=100+10x$.
The gross salary $G$ of Tiffany as a function of the number of items sold $(x)$ is $G\left( x \right)=100+10x$.
