Find the second, fourth, and eleventh terms of the sequence described by each explicit formula.
A(n) = -3 + (n - 1)(5)

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

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?

What is the domain of the step function f(x)=[2x]-1?