If no withdrawls were made, the total amount of money Yoko would have in her account in 8 years is $6,319.84.
When an account is compounded semiannually, it means both the amount deposited and the interest accrued increases in value twice yearly.
The formula that can be used to determine the value of the account in 8 years is:
FV = P (1 + r)^nm
$4000 x (1.029)^(2x8) = $6,319.84
To learn more about future value, please check: https://brainly.com/question/18760477