exam Maths Puzzle Numerical Ability

Statistics. A survey of 400 people found that 66 were left-handed. What percent
of those surveyed were left-handed?

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exam Other Question

I need help solving the following problem:

(3v^2 + 2v + 12) / (v + 2)

Thanks!
I am in need of help:I am lost on these.

Graph the quadratic after completeing the given table value. Y=x^2+2

and

Graph the quadratic after completeing the given table value. y=x^2+2x-3


Thanks a miilion