Gaokao Math Practice Question
若变量 $x, y$ 满足约束条件 $\left\{\begin{array}{l}x \geqslant-1 \\ y \geqslant x \\ 3 x+2 y \leqslant 5,\end{array}\right.$ 则 $z=2 x+y$ 的最大值为 ($\qquad$)
- A.1
- B.2
- C.3
- D.4
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