Which of the following functions best describes this graph?
a. y=x2+9x+18
b. y=x2-2x+4
c. y=(x-3)(x-6)

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