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