Sally spent half of her allowance going to the movies. she washed the family car and earned 9 dollars. what is her weekly allowance if she ended with 12 dollars

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