PLEASE HELP ME FAST A farmer has an organic farm. The yield of potatoes a year is twice the yield increased by the product of 2 more than that yield and 3 is equal to 21 tons. What is the yield of potatoes in the farm for that year?

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