OpenStax, Algebra and Trigonometry 2e §13.4 Series and Their Notations · Example 2 · Probability · Counting & chance

Series and Their Notations · Example 2

ⓐ Find the sum of the first 30 terms of the arithmetic sequence: 7, 10, 13, 13, 19,...
ⓑ Find the sum of the first 50 terms of the arithmetic sequence whose general term is $a_{n} = 2 n - 5$ .
ⓒ Find the sum
$\sum_{i = 1}^{30} (6 i - 4)$

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OpenStax, Algebra and Trigonometry 2e · §13.4 Series and Their Notations · Example 2

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