Question

Flora made 7 withdrawals of $75 each from her bank account. What was the overall change in her account?

Answer 1

Withdrawals are when cash is taken out from the account
Flora withdraws an amount of $75 at a time from her bank account
she makes 7 such withdrawals 
one withdrawal she takes out - $75
then seven withdrawals leads to - $75 x 7 = $525 
then overall change in her account has been a net withdrawal of $525
so the overall change in the account is -$525

Answer 2

Total amount withdrawn by Flora is given by 7 x $75 = $525.

Let the initial balance in Flora's account before the withdrawals be x, then the overall change in her account is given by x - 525