Which is the domain of the function f(x) = all real numbers
O all real numbers less than 0
O all real numbers greater than 0
O all real numbers less than or equal to 0

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 if no money is deposited or withdrawn except the service charge, how many months until the account balance is negative