Precalculus
posted by Y .
Find each of the sums indicated or described. Show use of the appropriate formula, rather than simply using a calculator to add them.
1) The sum of the first 17 terms of a geometric series with a first term of 3000 and a common ratio of 1/2.
2) 7+9+11+13+... 10 terms
3) 1 + ã2 + 2 + 2ã2... 12 terms
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