The function f (t) = 7.2t models the average distance, f (t), in kilometers that bob rides his bike over time, t, in hours (a) the function g (t) = 5.9t models the average distance, g (t), in kilometers that alice walks over time, t, in hours. compare the rate of change of f (t) to the rate of change of g (t). what does this tell you about alice's and bob's speeds?