A plane flying horizontally at an altitude of 1 mi and a speed of 500 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 2 mi away from the station. (a). What quantities are given in the problem? (b). What is the unknown? (c). Draw a picture of the situation for any time t. (d). Write an equation that relates the quantities. (e). Finish solving the problem.