Suppose that $6,000 is placed in a bank account at the end of each quarter over the next 11 years. What is the future worth at the end of 11 years when the interest rate is 15% compounded at the given intervals? (a) Quarterly (b) Monthly (c) Continuously (a) The future worth will be $ 648345 . (Round to the nearest dollar.) (b) The future worth will be $ 656,400. (Round to the nearest dollar.) (c) The future worth will be $ (Round to the nearest dollar.)