The audiovisual tech ordered 4 boxes of microphone cords. There are 12 cords in each hoax there me is now a total of 108 cords how much boxes of cords are there

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