Determine if the given ordered triple is a solution of the system.(1, -2, 2)
A. not a solution
B. solution
Answer: B
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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 20,000 feet? Round your answer to the nearest tenth mile, if necessary.
A. 12,200 mi B. 1220 mi C. 172.5 mi D. 156.2 mi
Solve the problem.If a projectile is fired at an angle ? and initial velocity v, then the horizontal distance traveled by the projectile is given by 
Express D as a function of 2?.
A. D = 
v2 sin 2?
B. D = 
v2 cos 2?
C. D = 
v2 sin 2?
D. D = 
v2 sin 2?
Solve the equation.10w - 10 = 20
A. w = 20 B. w = 3 C. w = 24 D. w = 12
Find the integral.
A. 4 ln 
+ 2xex-1 + C
B. 
+ 2ex + C
C. 
+ 2xex-1 + C
D. 4 ln 
+ 2ex + C