For the set of valueses $x _ { 1 } = 1 , x _ { 2 } = 3 , x _ { 3 } = - 2,$ 2, a nd x4 = 6, find the following.
-$\sum _ { i = 1 } ^ { 4 } 5 x _ { i }$
A)41
B)8
C)40
D)35

Question

Quizplus · Accepted Answer

The sum $\sum _ { i = 1 } ^ { 4 } 5 x _ { i }$ means to multiply each value of $x_i$ by 5 and then sum them up. So, $5(1) + 5(3) + 5(-2) + 5(6) = 5 + 15 - 10 + 30 = 40$.

For the Set of Valueses x1=1,x2=3,x3=−2,x _ { 1 } = 1 , x _ { 2 } = 3 , x _ { 3 } = - 2,x1​=1,x2​=3,x3​=−2,

For the Set of Valueses $x _ { 1 } = 1 , x _ { 2 } = 3 , x _ { 3 } = - 2,$