\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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Let \(u_{n+1} = 0.8u_n + 2\). If we define \(v_n = u_n - 10\), then \((v_n)\) is a geometric sequence with common ratio:
\(0.8\)
\(2\)
\(10\)
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