Asked my teacher to help me on this and he said to look at my notes I don’t have any ;-; so if some can teach me how to set up the problem for at least 1 that would be appreciated

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.