What would be the annual percentage yield for a savings account that earned $31.20 in interest on $600 over the past 365 days? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) Annual percentage yield 7.20% (a) Monthly fee, $3.25; processing fee, $0.35 cents per check; checks written, an average of 20 a month. (Do not round intermediate calculations. Input the answer as a positive value. Round your answer to 2 decimal places.) Net annual cost $ 123.00 (b) Interest earnings of 5 percent with a $500 minimum balance; average monthly balance, $800; monthly service charge of $12 for falling below the minimum balance, which occurs three times a year (no interest earned in these months). (Do not round intermediate calculations. Input the answer as a positive value. Round your answer to 2 decimal places.) Net annual cost $ 4.00