For each scenario below, choose the graph that gives the best representation.
(a) Keisha is working out by riding her bike. She starts by biking slowly at a constant rate. Then she gradually picks up speed until she reaches her peak. She maintains this peak speed for the rest of the workout.
(b) A sight-seeing ship is stopped in the water for an hour, miles from the shore. Then the captain heads the ship back to the shore at a constant rate. The ship docks at shore for a while, then returns to the open sea.