He simple formula for the nth term of an arithmetic sequence is an = 5n + 15. What is the explicit formula?
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Answer:
I believe it should be C. 20 + (n-1)(5) = 20 + 5n - 5 = 15 + 5n "Explicit" formula is a weird term I have not heard used before, but this is the only thing that makes sense to me the way the question and answers inter-relate.
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Other answers
I believe it should be C. 20 + (n-1)(5) = 20 + 5n - 5 = 15 + 5n "Explicit" formula is a weird term I have not heard used before, but this is the only thing that makes sense to me the way the question and answers inter-relate.
MarissaC
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