Joan is an electrician. for each job he charges $32 an hour plus a call-out fee of $35. a) joan does a job for mr. lee it takes him 2 and 1/2 hours .how much does he charge mr. lee.

Problem 3 a bank charges a service fee of $7.50 per month for a checking account. a bank account has $85.00. if no money is deposited or withdrawn except the service charge, how many months until the account balance is negative