15 guests are in attendance and 4 of them are randomly selected to receive a door prize. if all 4 prizes are identical, in how many ways can the prizes be awarded?

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Val and tony get paid per project. val is paid a project fee of $44 plus $12 per hour. tony is paid a project fee of $35 plus $15 per hour. write an expression to represent how much a company will pay to hire both to work the same number of hours on a project.