Solve the equation and check your proposed solution.22 = f - 9
A. -31
B. 13
C. -13
D. 31
Answer: D
Mathematics
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Factor the four-term polynomial by grouping.xy - 2yz + 5x - 10z
A. (y + 5)(x - 2z) B. (y - 5)(x + 2z) C. (y + 2)(x - 5z) D. (y - 2)(x + 5z)
Mathematics
The table below shows the scores of a group of students on a 10 point multiple choice placement test.
The total number of students taking the test is
A. 30. B. 52. C. 8. D. 180. E. none of these
Mathematics
Solve the problem.The solution set of the inequality x2 - 5x - 14 < 0 is (-2, 7). Without doing any work, give the solution to 
A. (-?, -2) ? (7, ?) B. (-?, -2] ? [7, ?) C. [-2, 7] D. (-7, 2)
Mathematics
Indicate whether the graph of the equation is a circle, an ellipse, a hyperbola, or a parabola. Then graph the conic section.x2 = 4 - (y + 8)2
A. parabola
B. hyperbola
C. ellipse
D. circle
Mathematics