Final answer:
To find the amount accumulated in the annuity account, use the formula for compound interest. In this case, the amount accumulated after 20 years is $172,605.32 for quarterly deposits of $1,800 at a 4% annual interest rate.
Step-by-step explanation:
To find the amount accumulated in the annuity account, we can use the formula for compound interest:
FV = P(1+r/n)^(n*t)
Where:
- FV is the future value (amount accumulated)
- P is the regular deposit amount (in this case, $1,800)
- r is the interest rate per period (4% per year, or 0.04)
- n is the number of compounding periods per year (quarterly deposits, so n=4)
- t is the number of years (20 years)
Using this formula:
FV = $1,800 * (1 + 0.04/4)^(4*20)
Calculating this expression gives us:
FV = $172,605.32
Therefore, the amount accumulated in the annuity account after 20 years is $172,605.32.