The change in Nina'a account balance is -$160.
Nina made 8 withdrawals and each time she took $20.
The change in her account balance will therefore be whatever the account balance is less the amount that she withdrew.
The total amount of money she withdrew is:
= Number of withdrawals x Amount withdrawn each time
= 20 x 8
= $160
Her account is therefore lower by $160.
In conclusion, the change in her account balance is -$160.
Find out more at https://brainly.com/question/22362588.
