Can someone please help me solve this? I inserted the table into Geogebra but the quadratic function was not correct.

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?

On a piece of paper graph f(x)=5•(0.4)^x

Find the domain of the following expression: 1/(√x)-2