9more than the product of 51 and a number t

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

Which of the following tables represents exponential functions?

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.