Given that the point (4,7) is on the graph of y=3f(2x)+1 , there is one point that must be on the graph of y=f(x) . What is the sum of coordinates of that point?
If x = 2 and y = 7, then 7 = 3f(4) + 1, so so f(4) = 2. The point on the graph is (2,2), and the sum is 4.
+232 
