Question is in the picture above lol (help pls)

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

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.

What is the angle measure, or angle of depression, between this bird and the bird watcher?