Multiply the following polynomials, and write your solution in standard form: (3x - 1)(2x^3+ 4x^2 – 5)

Which statement is true about the local minimum of the graphed function? over the interval[-4,-2], the local minimum is 0. over the interval [-2,-1] , the local minimum is 25. over the interval [-1,4], the local minimum is 0. over the interval [4,7], the local minimum is -7