SOLUTION: Find the sum of the first eight terms of the arithmetic series 3 + 5 + 7 + 9 +...

Question 709273: Find the sum of the first eight terms of the arithmetic series 3 + 5 + 7 + 9 +...
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
The sequence of terms uses difference of 2. The beginning term is 3.

The general term of the sequence,

The summation for n terms of an arithmetic sequence is
, using as indicated, the first and last terms in the range.

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