In the year 2004, the age-adjusted death rate per 100,000 Americans for heart disease was 231.5. In the year 2007, the age-adjusted death rate per 100,000 Americans for heart disease had changed to 205.3. a) Find an exponential model for this data, where t =0 corresponds to 2004. F(t) = b) Assuming the model remains accurate, estimate the death rate in 2028. (Round to the nearest tenth.)