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The explicit rule for the sequence 3, 5, 7, 9 can be expressed as ( a_n = 2n + 1 ), where ( n ) starts from 1. In this formula, ( a_n ) represents the nth term of the sequence. The sequence increases by 2 for each subsequent term, starting from 3. Thus, for ( n = 1, 2, 3, 4 ), the terms are 3, 5, 7, and 9, respectively.

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8mo ago

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