Question

What is the sum of the first 10 terms of the sequence defined by an=2n-3

Answer 1

Answer: The sum of the first ten terms of the sequence is 80

Answer 2

$a_n = 2n - 3$

$\text {When n = 10,}$

$a_{10} = 2(10) - 3$

$a_{10} = 17 \text { Answer (B)}$

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Answer: The 10th term is 17.
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