Adam and beth are running a marathon together. the distance (in miles) that adam runs, for every minute t, can be given by a(t)=(1/10)t and the distance (in miles) that beth runs, for every minute t can be given by b()= (1/200)t2. assuming that adam and beth are running at the same time but are running at different points in the marathon, what is the total distance [d(t)] that adam and beth cover in 40 minutes? give your answer to the nearest whole number.