The graph of the function f and a table of values for the fu
     The graph of the function f and a table of values for the function g are shown above. What is the value of f(g(0)) ?  (A) -4 (B) -2 (C) 0 (D) 2 (E) 4 
  
  Solution
From looking at the table:
 g(0) = 2
now if you look at the graph and on the x axis go to 2. Now where x = 2, draw a vertical line. Where your vertical line intersects with the graph is the coordinate (2, f(2)). What you find for F(2) ....?
Line will intersect the graph at -2
so f(g (0)) = -2

