11. At noon, a car leaves town A on a street road, heading south at 60 km/h, and a plane 4 km above the ground passes over town A heading east at 650 km/ h. (a) Express the distance r travelled by the car and the distance 5 travelled by the plane as functions of time. (b) Express the distance d between the plane and the car in terms of r and s. (c) Express d as a function of time. (d) How far apart were the plane and the car at 1:30PM? 12. The rule of the function f is given by the graph below. Find [a] the domain off in interval notation. (b) the range of fin interval notation. (C) fE- 2] (Inf [2) (8] f [0] (f) f [4)