If f(x)=2x-6 and g(x)=x^3 what is (g f)(0)

The answer is:

To composite functions, we need to evaluate functions in another function(s), for example:

Given f(x) and g(x), if we want to calculate f(x) composite g(x), we need to evaluate g(x) into f(x).

So, we are given the functions:

And we are asked to calculate g(x) composite f(x), and then evaluate "x" to 0, so, calculating we have:

Now that we have the composite function, we need to evaluate "x" equal to 0, so:

Hence, we have that:

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