Question: 19 Using the substitution method, the solution to the linear system-x+2y=-3 and y=x-4 is a. (1,-3) b. (5, 1) c. (1-1) d. (-11,4) 20

19 Using the substitution method, the solution to the linear system-x+2y=-3 and y=x-4 is a. (1,-3) b. (5, 1) c. (1-1) d. (-11,4) 20 Using the elimination method, the solution to the linear system 4x+3y=-9 and 4x-9y=-21 is a. (2,-2) b. (-3, 1) 21 What is the product (8x+10)(9x-11)? B 72x178x 110 b. 72 178x-110 c. (-3,-2) d. (1,-3) c. 72x-2x-110 d. 72x+2x-110

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