Answer: 111
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Work Shown:
f(x) = x^3
f(3) = 3^3 ... replace every x with 3
f(3) = 27
g(x) = 4*x + 3
g(x) = 4*( x ) + 3
g(f(3)) = 4*( f(3) ) + 3 ... replace every x with f(3)
g(f(3)) = 4*( 27 ) + 3 ... replace f(3) with 27
g(f(3)) = 108 + 3
g(f(3)) = 111
