The question is in the pics

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Using elimination, what is -4x+2y=-12 4x+8y=-24

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction