the researchers have also determined that the current rate of the rise in water level is twice the 1880 to 2009 rate. assuming that this new rate began in 2009 , you can use the function g(x) = 3.2(x-2009)+206 , which models the total rise in water level in mm since 1880 for any year x , beginning in 2009 . what is the domain of g(x) ?
