Problems 1 - 3, write the augmented matrix to represent each system. 2x - 5y - 32 = -5 3x + y = 11 x - 4y+2 =9 3. x - 3y + 32 = -5 (2x - y = 14 2. 3y + 42 = 10 3x + 2y -42 = -6 2x + 32 = 6 Problems 4 - 7, perform each row operation on the given augmented matrix. 4 4. 2 A.) R2 = -2n + 72 A.) Ri=nti B.) R3 = 3n1 + 73 B.) R1 = n - 1 1 3 -2 A.) R2 = -213 + 71 A.) R3 = 13 - 271 B.) R3 = 12 - 1's B.) R2 = 271 - 12