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Anonymous
The answer is n = 5.
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4n + 3 = 15 4n +3 - 3 = 15 - 3 4n = 12 4n/4 = 12/4 n = 3
4n-1 = 3
The nth term is 4n - 3
-2 plus 5 equals +3
6n -3=2n+9 6n-2n=9+3 4n=12 n=12/4 n=3