Prove that if -5(x+4)=70, then x=-18

Brainliest ! which of the coordinates are not of th vertices of the feasible region for the system of inequalities y≤4,,x≤5,x+y> 6 a(2,4) b(0,6) c(5,4) d(5,1)

Using elimination, what is -4x+2y=-12 4x+8y=-24

Who long does it take to drive 150 miles at 45 miles per hour