Write the sum using summation notation.
-$$14 + 19 + 24 + 29 + 34$$
A) $\sum _ { \mathrm { i } = 1 } ^ { 4 } ( 5 \mathrm { i } + 9 )$

B) $\sum _ { i = 1 } ^ { 5 } ( 5 i + 9 )$

C) $\sum _ { \mathrm { i } = 1 } ^ { 5 } 5 \mathrm { i }$

D) $\sum _ { \mathrm { i } = 1 } ^ { 5 } ( \mathrm { i } + 9 )$

Question

Write the sum using summation notation.
-$$14 + 19 + 24 + 29 + 34$$
A) $\sum _ { \mathrm { i } = 1 } ^ { 4 } ( 5 \mathrm { i } + 9 )$

B) $\sum _ { i = 1 } ^ { 5 } ( 5 i + 9 )$

C) $\sum _ { \mathrm { i } = 1 } ^ { 5 } 5 \mathrm { i }$

D) $\sum _ { \mathrm { i } = 1 } ^ { 5 } ( \mathrm { i } + 9 )$

Quizplus · Accepted Answer

In the given expression, each term is obtained by adding 5 to the previous term. Also, there are 5 terms in the expression. Hence, we can use summation notation with the index starting from 1 and ending at 5. The expression inside the summation will be 5i + 9, where i is the index. Therefore, the correct summation notation is $\sum _ { i = 1 } ^ { 5 } ( 5 i + 9 )$ which corresponds to choice B.

Write the Sum Using Summation Notation 14+19+24+29+3414 + 19 + 24 + 29 + 3414+19+24+29+34

Write the Sum Using Summation Notation $14 + 19 + 24 + 29 + 34$