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Question
The function f and g are defined by f(x) = 6x + 8; g(x) = `(x - 2)/3`
Write an expression for gf(x) in its simplest form
Sum
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Solution
gf(x) = g[f(x)]
= g(6x + 8)
= `(6x + 8 - 2)/3`
= `(6x + 6)/3`
= `(6(x + 1))/3`
gf(x) = 2(x + 1)
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