Your mission is to track incoming meteors to predict whether or not they will strike Earth. Since Earth has a circular cross section, you decide to set up a coordinate system with its origin at Earth's center. The equation of Earth's surface is x2 + y? = 40.68 , where x and y are distances in thousands of kilometers. You observe a meteor moving along a path from left to right whose equation is 240 361 (y - 15) - x2 = 60, where y