What is the square root of negative 27

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

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.

Can some one me with these questions