Can I have some help

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 dy/dx using implicit differentiation ln(20+e^xy)=y

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.