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# hard question!

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The function f(x) is graphed below. Each small box has width and height 1.

What is the value of \(f(f(1))+f(f(2))+f(f(3))+\cdots+f(f(8))+f(f(9))\) ?

Jul 18, 2020

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I'll get ya started:

f(1) = ?     Look at the x= 1 line to find the value  f(1) = 7    (the red dot)

then  f(7)    look at the value of the function at x= 7       f(7) = 9   (the red dot)

so (f ( f(1)) = 9

Do this with the other 8 parts of the question and sum them together....kinda tedious I know !

Jul 18, 2020