Aiden is a taxi driver. M(n)M(n)M, left parenthesis, n, right parenthesis models Aiden's fee (in dollars) for his n^\text{th}n th n, start superscript, start text, t, h, end text, end superscript drive on a certain day.

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?

Which expression gives the exact value of x?

Which diagram shows lines that must be parallel lines cut by transversal?