Eliminate the parameter of the pair of parametric equations.x = 5 tan t, y = 4 cot t
A. xy = 20
B. y = 
sin x
C. y = 
cos x
D. 
= 20
Answer: A
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Solve the problem.The orbit of a satellite had a semimajor axis of a = 8872 km. Calculate the period of the satellite. 
and 
A. 78.2 min B. 1.98 hr C. 12 hr D. 138.6 min
Sketch the graph of the function.y = 
- 2 sin 3x
A. 
B. 
C. 
D. 
Solve.A plane flying with a tailwind flew at a speed of 460 mph, relative to the ground. When flying against the tailwind, it flew at a speed of 330 mph. Graph the system to find the speed of the plane in calm air and the speed of the tailwind.
A. Speed of plane: 405 mph Speed of tailwind: 55 mph B. Speed of plane: 55 mph Speed of tailwind: 405 mph C. Speed of plane: 395 mph Speed of tailwind: 65 mph D. Speed of plane: 65 mph Speed of tailwind: 395 mph
Write an equivalent expression in exponential form.log4 16 = 2
A. 416 = 2 B. 42 = 16 C. 162 = 4 D. 24 = 16