Solve the problem.An airplane is sighted at the same time by two ground observers who are 5 miles apart and both directly west of the airplane. They report the angles of elevation as 15° and 
How high is the airplane?
A. 1.29 mi
B. 5.14 mi
C. 3.15 mi
D. 2.11 mi
Answer: C
Mathematics
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Write in the required form.3
; fraction
A. 
B. 
C. 
D. 
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Solve the inequality.
< 0
A. 
? 
B. 
? 
C. 
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D. 
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Evaluate the expression without a calculator.8log86
A. 6 B. 1 C. 8 D. 48
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Suppose that the function with the given graph is not f(x), but f'(x). Find the open intervals where f(x) is increasing or decreasing as indicated. Increasing
A. (-?, -3), (3, ?) B. (-?, -3), (-3, 3), (3, ?) C. (-?, ?) D. (-3, 3)
Mathematics