The time it would take the amount deposited in the bank to grow to $4000 is 138.35 months.
The formula that can be used to determine the time is:
Number of months = In(FV / PV) / r
Where:
In(4000 / 2300) / 0.004 = 138.35 months
To learn more about how to determine time, please check: https://brainly.com/question/21841217