#15. square
step-by-step explanation:
because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that you know what i meanz)
hope this halps!
bai!
answer: my brother can figure it out, imma go get him so i can answer : ) edit: my brother is sleeping, sorry man
-22
times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3