Order the group of parabolas from widest to narrowest

y = 1/4x 2, y = - 1/2x 2, y = 3/2x 2

A.

y = 1/4x 2, y = 3/2x 2, y = - 1/2x 2

B.

y = - 1/2x 2, y = 1/4x 2, y = 3/2x 2

C.

y = 1/4x 2, y = - 1/2x 2, y = 3/2x 2

D.

y = 3/2x 2, y = - 1/2x 2, y = 1/4x 2

The triangular prism shown has? triangular face (s) and? lateral face (s).

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Whats the answer to 8x+x=18

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