A hamburger and 2 drinks cost $6.00,2hamburgers and 2 drinks cost $9.60 How much does 1 drink cost?

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

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

What is the rate of change of a line that passes through (2,-5) and (6,-2)?