Does the equation y=3x3+4x2+15x+7 represent a function? Explain. A. No, the equation is not a function because it is a polynomial and polynomials cannot be functions. B. A. No, the equation is not a function because there are multiple terms that contains the variable x. C. Yes, the equation is a function because there is only a single term that contains the variable y. D. Yes, the equation is a function because it is a polynomial and all polynomials are functions.