officialurban officialurban 13-08-2017 Mathematics contestada Given the exponential function f(x)=2^x, Which of the following represents a horizontal shift of +4 units? A. f(x)=2^x-4 B. f(x)=2^x+4 C. f(x)=2^x^-4 D.f(x)=2^x^+4