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 27,000 feet? Round your answer to the nearest tenth mile, if necessary.
A. 16,470 mi
B. 1647 mi
C. 181.5 mi
D. 200.5 mi
Answer: D
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Solve the problem.Find the dimensions of a box with largest volume if it lies in the first octant, three of its faces lie in the coordinate planes, and the box lies beneath (or touching) the ellipsoid with equation 
A. 
by 
by 
B. 
by 2
by 4
C. 
by 
by 
D. 2
by 4
by 8
Refer to the figure. 
Write the bearings of the points H and I.
A. H: N 20° W I: N 62° W B. H: N 80° W I: N 62° W C. H: N 20° W I: N 28° W D. H: N 80° W I: N 28° W
Translate the situation into mathematical language. You need not actually solve the problem.A piece of wire 124 in. long is to be cut into two pieces, and those pieces are each to be bent to make a square. The area of one square is to be 225 in.2 greater than that of the other. How should the wire be cut?
A. Let x be the length of one piece of wire; x
= 225
B. Let x be the length of one piece of wire; 
2 + 
2 = 225
C. Let x be the length of one piece of wire; 
2 - 
2 = 225
D. Let x be the length of one piece of wire; 
2 - 
2 = 225
Find the sum of the geometric series.
Round the answer to four decimal places when necessary.
A. 3329.0975 B. 303.7428 C. 5794.625 D. 2897.3125