$\{$:$[0\mathrm{.}7$ xx$1+2\mathrm{.}1$ xx xx$1+2\mathrm{.}1$ xx$2=57],[0\mathrm{.}7$ xx$1+1\mathrm{.}4$ xx$2<mtext\; id="EditorElement\_133831"></mtext><mn\; id="EditorElement\_133832">2</mn><mn\; id="EditorElement\_133833">5</mn><mi\; id="EditorElement\_133834">]</mi>$:$\}$

$5$

$4$ points

Which of the following objective functions is correct?

MaxZ$=50x1+302$

MLinZ$50x1+302$

MLinZ$=501+30x2$

$$

$4$ points

Which of the following constraints is correct?

$161+12257$

$x1+x257$

$x1+x2(50+30)$