math

PLEASE HELP!!! This is a last minute homework help!!!
A computer software company models the profit on its latest video game using the relation: p(x) = -4x^2+20x-9, where x is the number of games produced in hundred thousands and p(x) is the profit in millions of dollars.
A) what type of function is p(x)?
b) what are the break-even points for the company? (break-even points means when profit is zero)

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  1. A) polynomial (quadratic, to be exact)
    B) solve -4x^2+20x-9 = 0
    using the quadratic formula or factoring or completing the square.

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