How many dots are in pattern 1

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]

Aline that intersects one of two parallel lines intersects the other also always sometimes never

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie