Determine the annual net cost of these decking accounts. A "-" sign must precede any negative net cost answers. Round your intermediate calculations to two decimal places. a. Monthly fee $8, check-processing fee of 30 cents, average of 17 checks written per month. Round the answer to the nearest cent. b. Annual interest of 3.5% paid if balance exceeds $800, $6 monthly fee if account falls below minimum balance, average monthly balance $875, account falls below $800 during 6 months. Round the answer to the nearest cent