Question: 3 a ) Prove that the sequence a n = 3 n + 7 4 n + 5 is decreasing. Prove that the sequence a

3a) Prove that the sequence an=3n+74n+5 is decreasing.
Prove that the sequence an=3n+74n+5 is positive.
3 a ) Prove that the sequence a n = 3 n + 7 4 n +

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