Yellow star thistle is an invasive plant species; it is a big threat in the Santa Monica Mountains national recreation area. Ecologists have gathered data to model the spreading of the plant. Suppose the land area (in square miles) has been overtaken by the thistle t years after 2000 is given by: w(t) = 0.792t^3-4.196t^2 +3.872t +24.021.

1) 2000 to 2005 =