Please help me. this is my last problem and i’m clueless.

This is different from the first one can someone me

Just tell me how to set up the equation.

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.