Solve for x
\left\{\begin{matrix}x>-w\text{; }x=15w-1760\sqrt{w}+48400\text{, }&w\geq 3025\\x\geq 15w-1760\sqrt{w}+48400\text{, }&w\neq 3025\text{ and }w\geq 0\\x\in \begin{bmatrix}-w,15w-1760\sqrt{w}+48400\end{bmatrix}\text{, }&w>3025\end{matrix}\right.
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Algebra
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0.2 * 0.5 * ( w + x ) ^ { 0.5 } + 0.8 * 0.5 * w ^ { 0.5 } - 2 \geq 20
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