Answer
$-1.53$
Work Step by Step
$\log_{b} \frac{3}{25}$
=$\log_{b} 3-\log_{b} 25$
=$\log_{b} 3-\log_{b} 5^{2}$
=$\log_{b} 3-2\log_{b} 5$
=$0.79-2(1.16)$
=$0.79-2.32$
=$-1.53$
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