1) what is the approximate solution to the system of equations below?
 Equations: 5y-2x=5 2y+x=-4
 A. (-11, -15)
 B. (0, 1)
 C. (-2, 0)
 D. (0, -2)
 2) how many solutions does this system of equations have? 
 Equations: y= -3x+7 y= -3x-6
 A. infinitely many
 B. 2
 C. 1
 D. 0