In Problems 69–82, determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the common difference; if it is geometric, find the common ratio. If the sequence is arithmetic or geometric, find the sum of the first 50 terms Transcribed Image Text: In Problems 69–82, determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the
common difference; if it is geometric, find the common ratio. If the sequence is arithmetic or geometric, find the sum of the first 50 terms.
69. {п + 2}
70. {2n – 5}
71. {4n² }
72. {5n² + 1}
73.
3
{{)}
{()’}
74.
75. 1, 3, 6, 10, …
76. 2, 4, 6, 8, . ..
77.
78.
79. –1, 2, –4, 8, …
80. 1, 1, 2, 3, 5, 8, …
81. {3″/2}
82. {(-1)”}
2/13
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