Which expressions is equivalent to 5(6xt3y)

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]

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

Which net represents the pyramid below? meh