The value of the given undefined function f(g(13)) will be equal to 15.
The function is a type of relation, or rule, that maps one input to specific single output.
Let f(x) = x- 2 and g(x) = x + 4
Get the composite function f(g(x))
f(g(x)) = f(x+4)
f(x+4) = (x+4) - 2
f(x+4) = x + 4 - 2
f(x+4)= x+2
Hence f(g(x)) = x+2
Substitute x = 13 into the resulting function,
f(g(13)) = 13 + 2
f(g(13)) = 15
Hence the value of the function f(g(13)) will be 15.
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