The graph of which function has an axis of symmetry at x= -1/4

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]

Ineed the answers for this one as well!

Based on the calculations you did using the law of sines, did you make a good choice for which ladder to use? why or why not?