Which function has a greater constant rate of change?

John makes $10.50 pers hour what expression represens how much he will make if he works h hours

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

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?