What was the main response of the middle class to the challenge of city living

The affluent middle class gradually began to 'escape' to the Suburbs. These were farther from the center of the city, with less crime, more green space and was thought of a better place to bring up a family. This also gave rise to daily communing and a suburban culture that still thrives in the United States.

(f-g)(X) = f(X)-g(X) = 5x^3-2-x-1= 5x^3-x-3