(1 point) On the augmented matrix A below , perform all three row operations in the order given, ((a) followed by (b) followed by (c)) and then write the resulting augmented matrix. 13 62 A=3864 3523 (d)R2 = 3r1 + 7'2 (b)R3 = 3r1 + r3 (C)R3 = 47'2 + r3 Note: You can earn partial credit on this problem. (1 point) Solve the system using row operations (or elementary matrices). {2x +5y 7x 4y )7: 54/5 lote: You can earn partial credit on this problem. 52 (1 point) Solve the system by finding the reduced row-echelon form of the augmented matrix. x + 2y+ 4z = - -3x - 4y - 10z = -3 -x - 2z = -5 reduced row-echelon form: 1 2 5 0 1 -3 0 How many solutions are there to this system? O A. None O B. Exactly 1 O C. Exactly 2 O D. Exactly 3 O E. Infinitely many OF. None of the above If there is one solution, give its coordinates in the answer spaces below. If there are infinitely many solutions, enter z in the answer blank for z, enter a formula for y in terms of z in the answer blank for y and enter a formula for x in terms of z in the answer blank for x.If there is one solution, give its coordinates in the answer spaces below. If there are infinitely many solutions, enter 2 in the answer blank for 2, enter a formula for y in terms of z in the answer blank for y and enter a formula for x in terms of z in the answer blank for x. If there are no solutions, leave the answer blanks for x, y and 2 empty. Preview My Answers Submit Answers You have attempted this problem 1 time. Your overall recorded score is 88%. You have 2 attempts remaining