The sum $S_n$ of the first $n$ terms of an arithmetic sequence is given by $S_n = \fracn2 (2a + (n-1)d)$. Here, $n = 8$, $a = 5$, and $d = 3$. - AMAZONAWS

📅 March 6, 2026 👤 scraface

Mar 06, 2026

$The sum $S_n$ of the first $n$ terms of an arithmetic sequence is given by $S_n = \frac{n}{2} (2a + (n-1)d)$. Here, $n = 8$, $a = 5$, and $d = 3$.$