Solve the nonlinear system.x2 + y2 = 81 y = x - 9
A. (0, -9), (0, 9), (-9, 0), (9, 0)
B. (0, 9), (-9, 0)
C. (0, -9), (9, 0)
D. no real solution
Answer: C
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Complete the ordered pairs. Then graph the equation.y = x - 7(0, ), ( , 0), (2, )
A. (0, -7), (-7, 0), (2, -9)
B. (0, 7), (-7, 0), (2, 9)
C. (0, -7), (7, 0), (2, -5)
D. (0, 7), (7, 0), (2, 5)
Solve the quadratic equation and simplify your answer. Use i notation for any complex numbers.x(2x + 5) = 6
A. x = 
B. x = 
C. x = 
D. x = 
Provide an appropriate response.The following table lists the population change over a 20-year period for selected countries. Which of these countries had the largest increase in population during this period? 
A. X B. W C. Z D. Y
Determine whether the pair of fractions is equivalent.
and 
A. not equivalent B. equivalent