Given f(x)=2^x, g(x)=4 how do you determine the combined function y=(f-g)(x) and state its function? Precalculus Functions Defined and Notation Function Composition 1 Answer Y May 17, 2017 y=2^x-4 Explanation: The combined function y=(f-g)(x) simply means that y=f(x)-g(x), therefore, we can write the combined function as: y=2^x-4 Answer link Related questions What is function composition? What are some examples of function composition? What are some common mistakes students make with function composition? Is function composition associative? Is it always true that (f@g)(x) = (g@f)(x)? If f(x) = x + 3 and g(x) = 2x - 7, what is (f@g)(x)? If f(x) = x^2 and g(x) = x + 2, what is (f@g)(x)? If f(x) = x^2 and g(x) = x + 2, what is (g@f)(x)? What is the domain of (f@g)(x)? What is the domain of the composite function (g@f)(x)? See all questions in Function Composition Impact of this question 1698 views around the world You can reuse this answer Creative Commons License