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Math·Algebra·Linear inequalities in one or two variables

easy

An environmental scientist needs to collect at least $38$ samples of red clay soil for analysis. If $r$ represents the number of samples the scientist collects for analysis, which inequality represents this situation?

A

$r\le 38$

B

$r-38\ge 38$

C

$r-38\le 38$

D

$r\ge 38$