Question 548070
If f(x) = 2x-4 And g(x) = x^2-4x 

Find f(4).


Just replace x with 4 for the function f(x) and simplify.


f(x) = 2x - 4


f(4) = 2(4) - 4


f(4) = 8 - 4


f(4) = 4

Done!!