Solve.
+ y = -3
A. -17
B. 
C. - 
D. - 
Answer: C
Mathematics
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Solve the problem.A formula for calculating the distance, d, one can see from an airplane to the horizon on a clear day is 
where x is the altitude of the plane in feet and d is given in miles. How far can one see in a plane flying at 28,000 feet? Round your answer to the nearest tenth mile, if necessary.
A. 17,080 mi B. 204.1 mi C. 1708 mi D. 184.8 mi
Mathematics
Use the fundamental identities to find the value of the trigonometric function.Find csc ? if cot ? = - 
and cos ? < 0.
A. 
B. 6
C. - 
D. - 6
Mathematics
Evaluate.
A. 9 B. - 3 C. 27 D. 0
Mathematics
Simplify. Assume that all variables represent positive numbers.
A. 
B. 
C. 
D. 
Mathematics