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Math·Algebra·Linear inequalities in one or two variables

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A newspaper stand sells magazines for $5 each and newspapers for $2 each. The stand needs to sell $m$ magazines and $n$ newspapers for a combined total value of at least $150 each day to cover operational costs. Which inequality represents this situation?

A

$5m+2n\le 150$

B

$5m+2n\ge 150$

C

$7mn\le 150$

D

$7mn\ge 150$