Match the following items. 1. the positive integers
2. an ordering of quantities separated by commas
3. the sum of the terms of an associated sequence
4. one of the individual quantities of a sequence
5.a formula that yields the value of a term when that term is
substituted in it
6. a series that has a common difference between terms
7. a series that has a common ratio between terms
8. a sequence in which each successive terms changes sign