根据短文内容填空。
Jane White is an American girl. She is fifteen. She is a middle school student. Her father is Bill White and her mother is Joan White. Her brother, Bob, is a student, too. He is in a black coat and Jane is in a red sweater.
解不等式组:2x-7<31-x43x+3≥1-23x并把解集在数轴上表示出来.