I really need help with this its too hard

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]

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

Which choice represents the sample space ,s for this event