Final answer:
Krista withdrew a total of $142.50 from her bank account after five weeks of withdrawals, which represents the change in her account balance.
Step-by-step explanation:
The student asked about the total change in her bank account after withdrawing $28.50 every week for five weeks.
To find the total amount withdrawn, we multiply the weekly withdrawal amount by the number of weeks.
Calculation:
- $28.50 x 5 weeks
- = $142.50
The number representing the change in Krista's bank account after these withdrawals is -$142.50.
The negative sign indicates money was taken out of the account.