Answer:
The accrued interest revenue is $210
Explanation:
The period of interest is from 1 October,2020 to  31 December ,2020,which translates into 3 months of interest accrued overall.
The interest accrued can be computed using the formula below:
interest accrued=note receivable amount*interest rate*number of applicable months/12
note receivable amount is $7,000
interest rate is 12%
applicable months is 3
interest accrued=$7,000*12%*3/12
             =$210
The accrued interest revenue is $210 as  shown above.
The timeline of 3 months is the key to unlocking the question.
