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$1$. Fungsi Tujuan: Meminimumkan $C=3 \times 1+4 \times 2$$\newline$Fungsi Batasan : $1$),$\newline$$$\begin{array}{l} \text { 2). } X 1+3 X 2 \geq 9.000 \\ X 1 \geq 0, X 2 \geq 0 \\ \end{array}$$