a customer has a debit card that gives monthly cash back bonuses. if the customer spends from 10.00 to 499.99 he earns 1% cash back. if he spends 500.00 to 999.99 he earns 2% cash back. for monthly purchases of 1,000 and more , he earns a 3% cash back bonus. His montly purchases for the past 6 months are as follows: 345.00, 592.00, 609.00, 280, 1020.00, and 452.00. how much did he earn in cash back bonuses ober the past six months (rounded to the nearest cent)?

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