Use rounding to estimate the product 12*9. then, use compensation to find the actual answer. if alison was rounding to find how much 12 books that were $9 apiece cost, would she get a good estimate? explain.

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 if no money is deposited or withdrawn except the service charge, how many months until the account balance is negative