Answer:
Option 4
The term that represents the amount of time that the money is accruing interest is 'x'.
Explanation:
Given : The function below represents the annual interest Alexander earns on a savings account.

To find : Identify the term that represents the amount of time that the money is accruing interest ?
Solution :
The general annual interest formula is

Where, A is the amount
P is the principal
r is the interest rate
t is the time
The annual interest Alexander earns on a savings account is
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Comparing with general formula,
t=x
The term that represents the amount of time that the money is accruing interest is 'x'.
Therefore, Option 4 is correct.