Evaluate the sum using the given information.
-$$\begin{array} { l }
x _ { 1 } = 3 , x _ { 2 } = 2 , x _ { 3 } = 1 , x _ { 4 } = 4 , \text { and } x _ { 5 } = - 2 \
\sum _ { i = 1 } ^ { 5 } \left( 2 x _ { i } + x _ { i } \right)
\end{array}$$
A) 32
B) 45
C) 24
D) 31

Question

Evaluate the sum using the given information.
-$$\begin{array} { l } 
x _ { 1 } = 3 , x _ { 2 } = 2 , x _ { 3 } = 1 , x _ { 4 } = 4 , \text { and } x _ { 5 } = - 2 \
\sum _ { i = 1 } ^ { 5 } \left( 2 x _ { i } + x _ { i } \right)
\end{array}$$
A) 32
B) 45
C) 24
D) 31

Quizplus · Accepted Answer

The expression inside the sum can be simplified to $3x_i$. Thus, the sum is $3(x_1 + x_2 + x_3 + x_4 + x_5) = 3(3 + 2 + 1 + 4 - 2) = 3 \times 8 = 24$.

Evaluate the Sum Using the Given Information A) 32 B) 45 C) 24 D) 31

Evaluate the Sum Using the Given Information A) 32
B) 45
C) 24
D) 31