Ihave a 60% in a class. i have to take a test that is worth 120 points. if i fail this test (like a 30%) how much will my grade go down?

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