Express the Sum Using Summation Notation $$\frac { 3 } { 4 } + \frac { 4 } { 5 } + \frac { 5 } { 6 } + \frac { 6 } { 7 } + \ldots + \frac { 17 } { 18 }$$

question 21

Multiple Choice

Express the sum using summation notation. Use a lower limit of summation not necessarily 1 and k for the index of summation.
- $$\frac { 3 } { 4 } + \frac { 4 } { 5 } + \frac { 5 } { 6 } + \frac { 6 } { 7 } + \ldots + \frac { 17 } { 18 }$$

• A) \(\sum _ { k = 3 } ^ { 17 } \frac { k } { k + 1 }\)
• B) \(\sum _ { k = 4 } ^ { 17 } \frac { \mathrm { k } + 1 } { \mathrm { k } }\)
• C) \(\sum _ { \mathrm { k } = 3 } ^ { 17 } \frac { \mathrm { k } + 1 } { \mathrm { k } }\)
• D) \(\sum _ { k = 4 } ^ { 17 } \frac { \mathrm { k } } { \mathrm { k } + 1 }\)

---

Definitions:

Consumer Electronic Products

Devices designed for everyday use by individuals, including smartphones, computers, TVs, and household appliances.

Geographic Region

A specific area defined by natural, cultural, and political criteria, which can vary in size from a small locality to an extensive area covering multiple countries.

Market Share

The portion of a market controlled by a particular company, product, or service, often expressed as a percentage of total sales.

Sherman Act

A fundamental U.S. antitrust regulation that prohibits business monopoly behaviors and encourages competitive practices.