Answer:
- neither
- arithmetic
- geometric
- arithmetic
- geometric
Step-by-step explanation:
Arithmetic sequences have a common difference. Geometric sequences have a common ratio.
The difference is found by subtracting a term from the next. If successive differences are all the same, they are "common."
The ratio is found by dividing a term by the one before it. If successive ratios are all the same, they are "common."
1.
There is no common ratio or common difference: neither.
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2.
The common difference is 14: arithmetic.
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3.
The common ratio is -2: geometric.
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4.
The common difference is -6: arithmetic.
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5.
The common ratio is 1/8: geometric.
