All absolute value equations have how many solutions ?

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

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?

Is ofat (-25, 0), (25, 0) co- (0, -15), (0, 15)?