Final answer:
The amount in the account after 21 years is approximately $4,769.17.
Step-by-step explanation:
To calculate the amount of money that will be in the account after 21 years, we can use the formula for continuously compounded interest:
A = P * e^(rt)
Where:
A is the final amount
P is the principal amount (initial investment)
e is the base of the natural logarithm (approximately 2.71828)
r is the annual interest rate (2.4% or 0.024 as a decimal)
t is the number of years
Plugging in the values:
A = 3000 * e^(0.024 * 21)
Using a calculator, the final amount in the account after 21 years is approximately $4,769.17.