Write an expression that equals (x-13). it must have atleast 2 sets of parentheses and one minus sign. verify that it is equal to (x-13).

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.