Help and answer choice d is 2/16+(+1)/225=1

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

How do you solve a question like this?

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.