Explain the difference between the two inequalities. how does this affect your method of solution?

Janets dinner costs 7.50. if she wants to leave a 10% tip how mich extra should she leave

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 not a polynomial?