The graph of f(x)= x^3-2x^2-5x +c if k is a constant number such that f(x)=k has 1 solution, which of the following could be the value of k?

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answer: the mildest forms of push polling are designed merely to remind voters of a particular issue. for instance, a push poll might ask respondents to rank candidates based on their support of an issue in order to get voters thinking about that issue. many push polls are negative attacks on other candidates.