What is the first term of the geometric sequence presented in the table below? n 3 8 an 112 −3,584 hint: an = a1(r)n − 1, where a1 is the first term and r is the common ratio. a1 = −28 a1 = −2 a1 = -1/2 a1 = 28

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.