PLEASE ANSWER THIS QUESTION PLZ PLZ

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6

Carli has 90 apps on her phone. braylen has half the amount of apps as theiss. if carli has three timesthe amount of apps as theiss,how many apps does braylen have? let b represent the number of braylen's apps and t represent the number of theiss's apps.