PLZ HELP ME :( you can pick both neither of one of the triangles

The parabola opens: y=√x-4 (principal square root) up down right left

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

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