A company's daily production cost $C(x)$ (in hundreds of dollars) for producing $x$ units (in thousands) is represented by the linear function shown in the graph that passes through $(0,8)$ and $(-8,0)$. The revenue $R(x)$ (in hundreds of dollars) for producing $x$ units is represented by the absolute value function shown in the graph with its vertex at $(-3,4)$. If the company wants to find the production level $x$ where cost equals revenue, which of the following expressions represents the $x$-coordinate of this production level?