Given f(x) = 2x + 5 and g(x) = 3x + 6
1 answer:
• f(x) = 2x + 5
• g(x) = 3x + 6
To evaluate f(g(x)), replace x with g(x) in the equation of f:
f(g(x)) = 2 · g(x) + 5
f(g(x)) = 2 · (3x + 6) + 5
f(g(x)) = 2 · 3x + 2 · 6 + 5
f(g(x)) = 6x + 12 + 5
f(g(x)) = 6x + 17
Therefore,
f(g(8)) = 6 · 8 + 17
f(g(8)) = 48 + 17
f(g(8)) = 65 <———— this is the answer.
I hope this helps! =)
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