What is the measure of abc ? a. 120 b. 45 c. 60 d. 75

Question and answers are in the attached picture. you so much in advance.

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k