Use substitution to determine whether the given ordered pair is a solution of the given equation.(-4, -40); y = 8x - 8
A. Yes
B. No
Answer: A
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Solve the inequality and graph the solution.25x - 40 > 5(4x - 7)
A. x ? 1 
B. x < 1 
C. x > 1 
D. x ? 1 
Provide an appropriate response.You are asked to change 10
to an improper fraction. What should be your first step?
A. Multiply 13 and 10. B. Add 10 and 9. C. Multiply 9 and 10. D. Divide 9 by 13.
Simplify by combining like terms.6x2 + 3xy - 9x2 + 12 + 2xy
A. -3x2 + 5xy + 12 B. -3x2 - 5xy + 12 C. 5x2 + 5xy - 12 D. 5x2 + 5xy + 12
Provide an appropriate response.Suppose that you are solving a system of 4 linear equations and 4 variables by the Gaussian elimination method. If you use the transformation -8R2 + R1, which row(s) of the augmented matrix will change?
A. Rows 2 and 1 B. Row 2 C. Row 1 D. No rows will change.