book Maths Puzzle Numerical Ability

I could not figure this question out....3y2-2brackety-(3-2y)bracket=3(y-2)to the 2nd power -12? The choices are a)0 and -1 B)0 and -2 C)0 D)-1 E)-2 Thank you for your time.

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book Other Question

A biccycle wheel is 28 in. in diameter. How many revoltions will the wheel make in traveling one mile? Im trying to do my homework, but I dont understand it.

It says y=x(squared)+1

and to find the
Y-intercept:
X-Intercept:
Vertex:
axus of symmetry:

Thanks.