The entire graph of the function f(x) is shown below ( f is only defined when x is between −4 and 4 inclusive). How many values of x satisfy f(f(x))=2?
Thank you so much!
f(x) = 2 ==> x = -3, 0, 3
f(f(x)) = 2 ==> f(x) = -3, 0, 3
f(x) = 3 ==> three solutions
f(x) = 0 ==> 1 solution
f(x) = -3 ==> two solutions
A total of 6 solutions.
+16 
