+33652 f(something) = -3, so, from the graph, something1 = 0 and something2 = -4
”something” is f(f(x)), so f(f(x)) = 0 and -4
This means f(somethingelse1) = 0 and f(somethingelse2) = -4
Fom the graph we see somethingelse1a = 2 and somethingelse1b = -6
Also somethingelse2 = -2 (only one value)
This means f(x) = 2, -6, -2
When f(x) = 2, x = 3 and -7
f(x) never reaches -6
When f(x) = -2, x = 1 and -5
So sum = 3 - 7 + 1 - 5 = -8
+33652 f(something) = -3, so, from the graph, something1 = 0 and something2 = -4
”something” is f(f(x)), so f(f(x)) = 0 and -4
This means f(somethingelse1) = 0 and f(somethingelse2) = -4
Fom the graph we see somethingelse1a = 2 and somethingelse1b = -6
Also somethingelse2 = -2 (only one value)
This means f(x) = 2, -6, -2
When f(x) = 2, x = 3 and -7
f(x) never reaches -6
When f(x) = -2, x = 1 and -5
So sum = 3 - 7 + 1 - 5 = -8
