What is the period of two points (-7(pi)/2) and (-5(pi)/2)?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?