solving these problem

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

Select all of the following expressions that are equal to 2.5.