Can someone please help me

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 percent notation for 0.008 0.008=

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents