Correct answers please?? I need all the help I can get.

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?

Answer for 10 points show work you guys in advanced < 3

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i