It's A. All you have to remember here are your rules of translations. If there is side to side movement within a parabola it will be indicated within a set of parenthesis with the x coordinate. If there is no set of parenthesis with the x there is no side to side movement. The quantity

tells us that the vertex has moved left 3 units.
I wish i could show u how to work it out but just do it or work it out the same way as the fractional numbers.
X=-2 is shown on the graph.
Y-2=3x+3
Then add two
So y=3x+5
Hope this helps sorry if wrong
To find a percentage, you the decimal point in the percent two places to the right 16% = 0.16. Then multiply.
0.16 • 400 = 64
16% of 400 = 64