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)”}

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