PLEASE HELP!!
match the absolute value functions with their vertices

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

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?