Tina is going for a bike ride. when she leaves her house, she starts pedaling and her speed steadily increases for a while. then she coasts for a while at a constant speed before she starts pedaling again, and her speed steadily increases again at a slower rate than it did before. when her legs get tired, she coasts at a constant speed again. finally, she reaches her destination and her speed steadily decreases until she comes to a complete stop.

which graph represents tina’s bike ride?