Write a Formula for the General Term (The Nth Term) $$\mathbf { a } _ { \mathbf { n } }$$

question 101

Multiple Choice

Write a formula for the general term (the nth term) of the arithmetic sequence. Then use the formula for $$\mathbf { a } _ { \mathbf { n } }$$ to find $$a _ { 20 }$$ , the 20th term of the sequence.
- $1,5,9,13,17 , \ldots$

• A) \(a _ { n } = 4 n - 3 ; a _ { 20 } = 77\)
• B) \(a _ { n } = 3 n - 4 ; a _ { 20 } = 56\)
• C) \(a _ { n } = 4 n + 3 ; a _ { 20 } = 83\)
• D) \(a _ { n } = n + 4 ; a _ { 20 } = 24\)

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Definitions:

Adjusting Entries

Journal entries made at the end of an accounting period to allocate income and expenditure to the period in which they actually occurred.

Future Years

Subsequent time periods extending beyond the current year, regarding planning, forecasting, or expectation.

Periodic Inventory System

This inventory system records the inventory at the beginning and end of an accounting period to calculate the cost of goods sold, without tracking each individual transaction.

Unrealised Profit

Profit that has been generated but not yet realized through a transaction, such as an increase in the value of an investment that hasn't been sold.