At the spring dance there were 23 more students than 6 times the number of
teachers. there were 215 students that attended the dance. how many teachers
attended the dance?

a.23 teachers

b.138 teachers

c.40 teachers

d. 32 teachers

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?