I need help in this question thank you so much

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.

Ineed with number 6 , explain how to get 1978

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?