Given that the point (9,7) is on the graph of $y=f(x)$ there is one point that must be on the graph of $2y=\frac{f(2x)}2+2$. What is the sum of coordinates of that point?
The point that must be on the graph of 2y = f(2x)/2 + 2 is (21,3/2), so the answer is 21 + 3/2 = 45/2.
