This question confuses me. I thought when we have function and we subtracted 3 from it, the graph should shift downwards, but in the explanation it says that this graph will shift to the right, and therefore the answer is 3.

To shift to the right I thought it would be in the notation of (x-2)^2, where we need to exponent to signal a shift right.

If anyone could explain the difference, it would be greatly appreciated.