Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.-2x + 9y = -13-4x + 18y = -15
A. (2, -1)
B. (2, 5)
C. (-13, 5)
D. No solution
Answer: D
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Test the vector field F to determine if it is conservative.F = -cos x cos yi + sin x sin yj - sec2 zk
A. Not conservative B. Conservative
Find a set of polar coordinates for the point for which the rectangular coordinates are given.(1, 0)
A. 
B. 
C. (1, 0)
D. (1, ?)
Determine whether the equation defines y as a function of x. y = 
A. function B. not a function
Refer to the double-bar graph below which shows the number of male and female athletes at a university over a four-year period. Solve the problem.
In which year did the greatest difference between the number of male athlete and female athletes occur? Find the difference.
A. 2005; 200 athletes B. 2005; 150 athletes C. 2005; 100 athletes D. 2003; 100 athletes