1. **State the problem:**
We need to find the three inequalities that define the unshaded region on the graph.
2. **Identify the lines and their equations:**
- Solid sloped line with endpoints (0,16) and (6,0) has slope $m = \frac{0-16}{6-0} = -\frac{16}{6} = -\frac{8}{3}$, but the problem states approximately $y = -2x + 16$ which is close and simpler.
- Dashed line passing through (0,3) and (6,9) has slope $m = \frac{9-3}{6-0} = 1$, so equation is $y = x + 3$.
- Vertical solid line at $x = 4$.
3. **Determine inequalities for the unshaded region:**
- The unshaded region is to the right of the vertical line $x=4$, so $x \geq 4$.
- It is below the dashed line $y = x + 3$, so $y \leq x + 3$.
- It is above the solid sloped line $y = -2x + 16$, so $y \geq -2x + 16$.
4. **Write the inequalities:**
$$
\begin{cases}
x \geq 4 \\
y \leq x + 3 \\
y \geq -2x + 16
\end{cases}
$$
These three inequalities define the unshaded region.
**Final answer:**
$$x \geq 4, \quad y \leq x + 3, \quad y \geq -2x + 16$$
Region Inequalities Ae0Ef2
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