Final answer:
To find the amount of money in Peggy's account at the end of 10 years, we can use the formula for compound interest:
. Plugging in the given values, we find that the final amount in Peggy's account is approximately $14,930.42.
Step-by-step explanation:
To find the amount of money in Peggy's account at the end of 10 years, we can use the formula for compound interest:
where:
- A is the final amount of money in the account
- P is the principal amount invested
- r is the annual interest rate (as a decimal)
- n is the number of times interest is compounded per year
- t is the number of years
In this case, Peggy is investing $8,400 at an annual interest rate of 6 1/2% (0.065) for 10 years, with semiannual compounding (n = 2). Plugging these values into the formula, we have:
A =

Using a calculator or a spreadsheet, we can calculate that the final amount in Peggy's account is approximately $14,930.42.