Solve the system of equations using substitution.
A. x = 0, y = -2; x = -2, y = 0
B. x = 0, y = 2; x = 2, y = 0
C. x = 0, y = 0; x = 2, y = -2
D. x = 2, y = -2; x = -2, y = -2
Answer: B
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Solve.5.4 - 4.27x - 1.8x = 20.575
A. -4.28 B. 8.33 C. -2.5 D. 3.5
Solve the problem.Kim decided to do some spring cleaning. She spent 
hours cleaning her garage on Saturday. The next day she spent 
hours cleaning her basement. What was the total amount of time she spent cleaning that weekend?
A. 16 hours
B. 16
hours
C. 3
hours
D. 15 hours
Solve the rational inequality and graph the solution set on a real number line. Express the solution set in interval notation.
< x
A. (-7, -5) ? (0, ?)
B. (-?, 5) ? (7, ?)
C. (-?, -7) ? (-5, 0)
D. (-?, -7) ? (0, ?)
Solve the system by the addition method.x2 + y2 = 25x2 - y2 = 25
A. {(0, 5), (0, -5)} B. {(5, 0)} C. {(5, 0), (-5, 0)} D. {(0, 5)}