Answer
The graph of $x(\frac{520}{3}-x)$ with $0\lt x\lt\frac{520}{3}$
Work Step by Step
$y=\frac{520}{3}-x$
The dimensions must be positive numbers. That is, $x\gt0$ and $y\gt0$
$y\gt0$
$\frac{520}{3}-x\gt0$
$-x\gt\frac{520}{3}$
$x\lt\frac{520}{3}$
So: $0\lt x\lt\frac{520}{3}$