How do i answer this question in spanish "quién es la maestra? "

The translation for that sentence is: Who is the teacher? So you answer it with a name. Since it is a teacher you must use Mr., Ms., or Mrs. in this case, maestra is feminine so you'll need to use Señora(Mrs.) or Señorita(Ms.).

Paul da flores a rachelpaul le de flores ( i think)

D. si acabo de recibir su mensaje de texto y le voy enviar uno dentro de 5 minutos