Which expression is equal to the expression below? (2• 6)4 O A. 84 O B. 24.64 O C. 2 (6)4 OD. 4 (2• 6)

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 if no money is deposited or withdrawn except the service charge, how many months until the account balance is negative