A bag of walnuts was 9 pounds. how many 1/4 of a pound servings are there in a bag. with step by step explanation please

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