Express the sum using summation notation. Use a lower limit of summation, not necessarily 1, and k for the index of
summation.
-$$3 + \frac { 7 } { 2 } + 4 + \frac { 9 } { 2 } + \ldots + \frac { 15 } { 2 }$$
A) $\sum _ { k = 2 } ^ { 15 } \frac { k } { 2 }$
B) $\sum _ { k = 6 } ^ { 10 } \frac { k } { 2 }$
C) $\sum _ { k = 1 } ^ { 15 } \frac { k } { 2 }$
D) $\sum _ { k = 6 } ^ { 15 } \frac { k } { 2 }$

Question

Quizplus · Accepted Answer

The sequence starts at $3 = \frac{6}{2}$ and ends at $\frac{15}{2}$, so the summation should start at $k=6$ and end at $k=15$.

Express the Sum Using Summation Notation 3+72+4+92+…+1523 + \frac { 7 } { 2 } + 4 + \frac { 9 } { 2 } + \ldots + \frac { 15 } { 2 }3+27​+4+29​+…+215​

Express the Sum Using Summation Notation $3 + \frac { 7 } { 2 } + 4 + \frac { 9 } { 2 } + \ldots + \frac { 15 } { 2 }$