exam Maths Puzzle Numerical Ability

How many points in a plane are in the locus of all points equidistant from two parallel lines in the plane?

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infinitely many

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exam Other Question

Determine whether g(x)= 2x 3squar - 3x is even, odd, or neither

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Solve the following problem:

What is the expression raised to the fourth power is 81x^12y^8z^16?

I have tried to figured this problem out and cannot seem to figure out how to solve. I need some help with this one, thanks.