Sarah had a balance of $155 in her bank account at the start of the week. she withdrew $65.50 on monday, $23.25 on wednesday, and $26.45 on thursday. on friday she deposits $ 165.30.
a) write an expression to represent sarah's spending.
b) simplify your expression using pemdas. how much is in sarah's account at the end of the week?
c) find the difference between sarah's bank account balance at the start of the week and her current balance.