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Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

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.

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)