Perform the indicated operation.9 - (-14)
A. -23
B. 23
C. -5
D. 5
Answer: B
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Determine whether the integration formula is correct. 
cos-1 7x dx = 
cos-1 7x + 
+ C
A. Yes B. No
Solve the problem. Round to the nearest tenth when necessary.A comet follows the hyperbolic path described by 
where x and y are in millions of miles. If the sun is the focus of the path, how close to the sun is the vertex of the path?
A. 4.2 million mi B. 6.5 million mi C. 30 million mi D. 1.2 million mi
Solve the problem.A plane flies 430 miles with the wind and 310 miles against the wind in the same length of time. If the speed of the wind is 24 mph, what is the speed of the plane in still air?
A. 138 mph B. 148 mph C. 153 mph D. 173 mph
A point P(r, ?) in polar coordinates is given. Determine the rectangular coordinates P(x, y).(-5, 120°)
A. 
B. 
C. 
D. 