Help please :D kinda confused

The system of equations graphed below has how many solutions? y = 2x + 2

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.

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?