(1) Find the antiderivative of x - 3x+ 2. (2 ) The figure on the right shows the graph of f(x)=x - x - 6x f(x) =x -x-6x. - X (a) Find the definite integral of f(x) on [-2,3]. -2 O 3 (b) Find the area between the graph of f(x) and the x-axis on [-2,3]. (3) x miles Highway 1 1 miles A rectangular region located beside a highway and between two straight roads 11 miles apart are shown in the figure above. The population density of the region at a distance x miles from the highway is given by D(x) =15xvx -3x2, where OS x 5 25. How many people live between 16 to 25 miles from the highway