Yo i need help and FAST PLEASE MY MOM IS SCORCHING WITH RAGE I NEED EXPLAMATION!!

(imma tell you the questions i have too many!!)

Which statements are true? see picture

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

We have enough material to build a fence around a station that has a perimeter of 180 feet the width of the rectangular space must be 3 1/4 feet what must the length be