If food is 630$ and clothing is $360 what percent of the budget 4500 is spended

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]

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Can you me find the missing length. i attached an image.