Sequences and Series Question
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Grade 9 Sequences and Series CCSS: HSF-BF.A.2
Which of the following is the recursive formula for the arithmetic sequence 15, 11, 7, 3, ... ?
- a1=15;an=4n-1
- a1=15;an=an-1-4
- a1=3;an=an-1+4
- a1=3;an=15n-1