For the first question, the problem is about the comparison between a graph and a function given in this case for the height of a baseball after t seconds of two players A and B.
For the second question, the problem gives a graph for player A and a function for player B
For the third question we could ask for example if the two players reach the same height at the same time how much time takes both players to reach a certain height, the maximum height of player A is bigger than player B or less than.