Find the sum.
-$$\sum _ { i = 1 } ^ { 4 } ( 3 i - 2 )$$
A) 21
B) 13
C) 10
D) 22

Name: Find the sum. -\[\sum _ { i = 1 } ^ { 4 } ( 3 i - 2 )\] A) 21 B) 13 C) 10 D) 22
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Question

Quizplus · Accepted Answer

We can use the formula for the sum of an arithmetic series, which is $S = \frac{n}{2}(a_1 + a_n)$, where $n$ is the number of terms, $a_1$ is the first term, and $a_n$ is the last term. In this case, $n = 4$, $a_1 = 1$, and $a_n = 10$. Therefore, $S = \frac{4}{2}(1 + 10) = 22$. Therefore, the answer is $\boxed{	ext{(D)}}$.

Find the Sum ∑i=14(3i−2)\sum _ { i = 1 } ^ { 4 } ( 3 i - 2 )i=1∑4​(3i−2)

Find the Sum $\sum _ { i = 1 } ^ { 4 } ( 3 i - 2 )$