Pengaruh citra tubuh, perilaku makan, dan aktivitas fisik terhadap Indeks Massa Tubuh (IMT) pada siswi SMA kelas X dan XI tahun 2014 (studi pada SMA Negeri 12 Jakarta Timur) = The body images, eating behaviors, and physical activities influence against body mass index (BMI) Among 10th and 11th Grades female students in 2014 (studies on 12th East Jakarta states senior High school)