What is the value of x?
A:5
B: 3
C: 4
D: 2

1. what are the missing reasons in the proof 2. it's in the second picture and 3

Need ! give step by step solutions on how to solve number one [tex]\frac{9-2\sqrt{3} }{12+\sqrt{3} }[/tex] number two [tex]x+4=\sqrt{13x-20}[/tex] number three (domain and range) [tex]f(x)=2\sqrt[3]{x} +1[/tex]

Find the value of x for which the lines are parallel.