The answer is D, 35 degrees. The 35 degree angle and angle x are opposite interior angles and are therefore congruent in measure.
It is this 100 60 40 30 800
The given expression is

THe given expression is a rational expression, and rational expression should not have 0 in the denominator.
Moreover, the denominator is a square root term, and square root don't have a value for negative number .
Therefore 2x+10 must be greater then 0. That is

Therefore the required domain in set builder form is
{
}