Answer the question.A researcher wishes to determine the percentage of voters in a town who favor stronger environmental laws. Which of the following would be the most representative sample?
A. A sample selected randomly from the phone book
B. A random sample of college students
C. A sample consisting of every 10th person leaving an organic food store
D. A sample of listeners who call in to a radio talk show
Answer: A
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L'Hopital's rule does not help with the given limit. Find the limit some other way.
A. 1 B. 0 C. ? D. -1
Find the center-radius form for the circle having the given endpoints of a diameter.(0, 3) and (0, -3)
A. x2 + (y - -3)2 = -3 B. x2 + y2 = 9 C. x2 + (y - -3)2 = 9 D. x2 + y2 = -3
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.5x + 5y + 5z = 515x + 16y + 17z = 1810x + 11y + 12z = 13
A. (-2, 6, 0) B. (-2, 3, 0) C. (z - 2, -2z + 3, z) D. No solution
Solve the problem.Write a polynomial that represents the volume of the open box.
A. 45x - 154x2 + 121x3 B. 45x - 154x2 + 11x3 C. 45 - 154x + 121x2 D. 45x + 154x2 + 121x3