Help me please I’m stuck

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]

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?