Question

Let f(x)=3x-4 and g(x)=x/2+1. Find f(g(x)) of f o g

Answer 1

• f(g(x)) = 1.5x - 1

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Given functions

• f(x) = 3x - 4 and g(x) = x/2 + 1

Find f(g(x))

Substitute g(x) into x of f and evaluate:

• f(g(x)) = f(x/2 + 1) = 3(x/2 + 1) - 4 = 3/2x + 3 - 4 = 1.5x - 1