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OpenStudy (anonymous):
Kelly cannot remember the formula for the sum of a finite arithmetic sequence, so she is going to try to derive it. Her problem is to find the sum of the numbers 1 to 500. What should she do first?
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OpenStudy (anonymous):
A) Add 1 to 500. B) Multiply 1 and 500. C) Subtract 1 from 500. D) Start adding the numbers together.
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