Work Step by Step
$156.25/62.5 = 2.5$ $62.5/25 = 2.5$ $25/10 = 2.5$ $10/4 = 2.5$ $4/1.6 = 2.5$ common ratio = 2.5 first term = 1.6 $y=1.6*2.5^x$
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