Question

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Answer 1

f(x) = 2x+3
f(f(x)) = f(2x+3) = 2(2x+3) + 3 = 4x + 6 + 3 = 4x + 9
this is f composed of itself (f of f of x).

Answer 2

So which is the answer because 2x+3 and 4x+9 are both choices.

Answer 3

It could be 4x^2 + 12 x+9

Answer 4

= 4x+9

Answer 5

according to the problem, \[f(f(x))=4x+9\]

Answer 6

Thank you again. Your a life saver