Which is a linear equation? a) x squared + y = 4 b) x + y = 4 c) xy = 4 d) 1/x + y = 4

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]

Q= {1.7, 1.1, 1.4, 2.1, 2.3, s}. what is the absolute difference between the greatest and least possible values of the median of set q? express your answer as a decimal to the nearest hundredth.

Apicture frame has a perimeter of 100cm it’s width is 4 cm less than twice its length what is the width of the picture frame a) 18 cm b) 32 cm c) 48 cm d) 50 cm