What would be the net annual cost of the following checking accounts?

a. Monthly fee, $3.75; processing fee, 25 cents per check; checks written, an average of 16 a month. (Round your answer to 2 decimal places. Input the amount as a positive value.)

Net annual cost:

b. Interest earnings of 3 percent with a $600 minimum balance; average monthly balance, $700; monthly service charge of $15 for falling below the minimum balance, which occurs three times a year (no interest earned in these months). (Do not round intermediate calculations. Round your answer to 2 decimal places. Input the amount as a positive value.)

Net annual cost: