Rationalize numerator.
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.Evaluate 
at t = 2? for the function w = x2 - y2 - 9x; x = cost, y = sin t.
A. -11 B. -13 C. 0 D. -7
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = ln (6x + 6y)
A. Domain: all points in the xy-plane satisfying 6x + 6y > 0; range: real numbers z ? 0; level curves: lines 
B. Domain: all points in the xy-plane satisfying 6x + 6y > 0; range: all real numbers; level curves: lines 
C. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
D. Domain: all points in the xy-plane satisfying 6x + 6y ? 0; range: all real numbers; level curves: lines 
Estimate by using front-end rounding. 
A. 140 B. 20 C. 14 D. 10
Which of the following strategic leaders is credited with restoring the entrepreneurial culture at Apple?
A. Steven Heyer B. Ed Zander C. Steve Jobs D. Kevin Rollins