Write in exponent form.y ? y ? y ? y ? y ? y ? 9 ? 9 ? 9
A. 93y6
B. 3 ? 9 ? y6
C. 92y5
D. 39y6
Answer: A
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Graph the pair of parametric equations with the aid of a graphing calculator.x = 5 tan t, y = 3 sec t; -?/2 ? t ? ?/2 
A. 
B. 
C. 
D. 
Indicate whether the statement is true always, sometimes, or never.A complex number is an imaginary number.
A. Sometimes B. Never C. Always
Sketch trajectories of solutions of z? = Az given the eigenvalues and associated eigenvectors of A. Classify the origin and assess its stability.
Suppose that the people in a certain city are catching cold. It is observed that after one week, 40% of the people who were sick are still sick. Of the people who were well, 30% are sick after one week. Set up the 
stochastic matrix with columns and rows labeled S and W that describes this situation.
A. 
B. 
C. 
D. 
