The sum of three numbers is 123. The third number is 3 times the second. The second number is 8 less than the first. What are the numbers?

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

Need solving this second acceleration problem.

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.