Find a formula for the nth term of the arithmetic sequence. First term 9 Common difference -2 $a_n = -2n + [?]$
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Step 1: The formula for the nth term of an arithmetic sequence is given by \(a_n = a_1 + (n-1)d\), where \(a_n\) is the nth term, \(a_1\) is the first term, \(n\) is the term number, and \(d\) is the common difference. Show more…
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