Acountry produced 3.5 billion gal of fuel ethanol in 2005. the production of corn-based ethanol has increased exponentially from only 1.1 billion gal in 1998. the
following function can be used to model this growth.
c(t) = 1.0647(1.1597), where t is the number of years since 1998
predict the number of gallons that will be produced in 2007 and 2009.
in 2007, billion gallons will be produced.
(round to one decimal place as needed.)