SOLUTION: I do not understand this. I read all about functions but it never talks about the double parentheses. Please help me with this. I tried a couple different thoughts but they were wr

Question 347652: I do not understand this. I read all about functions but it never talks about the double parentheses. Please help me with this. I tried a couple different thoughts but they were wrong.
(1 pt)
Let the function f be defined by
f(x) = 4 x + 4.
Then f(f(9)) =____ and f(f(10)) = ____.
Hint: As always, first figure out what's inside the parentheses.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
How about if I said find and by the way .
What would you do?
FIrst you'd solve for .
Then you'd plug that result into .
But you're really solving .
Try that first and see if it makes sense.
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