Express the Sum Using Summation Notation $$a + 1 + \frac { a + 2 } { 2 } + \ldots + \frac { a + 6 } { 6 }$$

question 19

Multiple Choice

Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.
- $$a + 1 + \frac { a + 2 } { 2 } + \ldots + \frac { a + 6 } { 6 }$$

• A) \(\sum _ { i = 0 } ^ { 6 } \frac { a + i } { i }\)
• B) \(\sum _ { i = 1 } ^ { n } \frac { a + i } { i }\)
• C) \(\sum _ { i = 0 } ^ { n } \frac { a + i } { i }\)
• D) \(\sum _ { i = 1 } ^ { 6 } \frac { a + i } { i }\)

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Definitions:

Variable Cost

Outgoings that are directly influenced by how much is produced or sold, including the costs of labor and materials.

Monthly Dollar Sales

The total revenue generated from sales in a given month, expressed in U.S. dollars.

Variable Expenses

Expenses that fluctuate with changes in production volume or business activity.

Fixed Expenses

Costs that remain constant and do not change with the level of business activity, similar to fixed overhead.