exam Maths Puzzle Numerical Ability

If A=3x2-2x-7 and B=x2+9, then what is their sum, A+B?

5x2-2x+2
4x2-2x-2
4x2+2
4x2-2x+2
none of these

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exam Other Question
I need some help with a couple of Parabola problems with graphs. Here is the second one:

Graph the parabola.

y = - x² + 3




I need the graph. Thanks I am having trouble with this problem Please Help

9c to the 5 d to the 8 x 4c to the 5 d to 8
divided by 2c to the 5 d to the 5