Problem 5-10 Comparing Costs of Checking Accounts [LO5-5] What would be the net annual cost of the following checking accounts? a. Monthly fee, $4.20; processing fee, $0.15 cents per check; checks written, an average of 20 a month. Note: Do not round intermediate calculations. Input the answer as a positive value. Round your final answer to 2 decimal places. b. Interest earnings of 8 percent with a $500 minimum balance; average monthly balance, $600; monthly service charge of $20 for falling below the minimum balance, which occurs three times a year (no interest earned in these months). Note: Do not round intermediate calculations. Input the answer as a positive value. Round your final answer to 2 decimal places