Perform the indicated elementary row operation. 1) {X ' 53' ' 4 R2+(2)R1 2x+2y=o ) 2) Find the result of performing the elementary row operation R3 + (5) R2 on the system A) B) C) 1 0 3 9 1 0 3 9 1 0 3 9 0511 1] 013 2 0032 05 41 1051411 0541 Use the indicated row operation to change the matrix. 3) Replace R2 by %R1 +%R2. 3 0 12 24 6 A) 3012 B) 3012 C) 3012 0 0 7 1 4 18 1 2 3 Use the GaussJordan method to solve the system of equations. 4) 2x + 4y = 14 2x + 3y 2 9 A)x:3,y:5 B)x:3,y:5 C)x:5,y:3 5) 2x y 92 : 71 6x + 62: 66 931+ z: 53 A)x:3,y:5,z:6 B)x:3,y:8,z:5 C]x:3,y:5,z:8 Fill in the missing numbers in the next step of the GaussJordan elimination method. 6) 1 7 4 5 1 7 4 5 4 1 9 9 " 027 I 4 3 5 0 0 25 I A) B) C) 1 7 4 5 1 7 4 -5 1 7 4 -5 0 -27 -24 31 0 -27 -27 28 0 -27 -13 14 O 25 20 -19 0 25 24 20 O 25 1 -21 Solve the problem. 1039 01-32 0-541 D) 10 39 0132 00-1111 D)[3o|12] 02 7 D) No solution D) No solution D) 1 7 4 5 0 -27 -25 29 0 25 21 -20 7) At a local 200, adult visitors must pay $3 and children pay $1. On one day, the zoo collected a total of $770. If the 200 had 410 Visitors that day, how many adults and how many children visited? A) 180 adults and 230 children B) 115 adults and 295 children C) 230 adults and 180 children D) 192 adults and 218 children