Rewrite in simplest terms: 10(-8x+7)-9x

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 - 1. click on the graph until the correct graph appears.

What is the solution to the equation below? 3/x-2+6=square root x-2 +8