Answer
$204624$ tons
Work Step by Step
$P=kN$
$P=260000; N=442000$
$260000=k(442000)$
$\frac{260000}{442000}=k$
$k=.588$
$P=.588N$
Pollution produced when population is $348000$:
$P=.588N$
$P=.588(348000)$
$P=204624$ tons
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