Someone say hi cause i have no clue what is happening i just started this app

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Graph y = -|x| + 2. click on the graph until the correct one appears.

Consider circle o, where and . m∠bpd °. °.