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Which point is a solution to the inequality shown in this graph (-3,-3)(3,-1)

Apolynomial function has a root of –6 with multiplicity 1, a root of –2 with multiplicity 3, a root of 0 with multiplicity 2, and a root of 4 with multiplicity 3. if the function has a positive leading coefficient and is of odd degree, which statement about the graph is true?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=