Use substitution to solve the linear system of equations. y=x-2 2x+4=y (-6,8) (6,8) (-6,-8) (6,-8)

Arestaurant needs to buy thirty-seven new plates. if each box has five plates in it, how many boxes will they need to buy?

Is the square root of 4 plus the square root of 16 rational?

Can some one explain this i got sent this. is this a threat i’m scared