Determine whether the relation is a function.{(4, 5), (5, 13), (4, 11), (2, 2)}
A. It is a function.
B. It is not a function.
Answer: B
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Solve the problem.Two forces, F1 and F2, of magnitude 60 and 70 pounds, respectively, act on an object. The direction of F1 is 
and the direction of F2 is 
. Find the magnitude and the direction angle of the resultant force. Express the direction angle to the nearest tenth of a degree.
A. 
= 92.20; ? = 89.4°
B. 
= 94.63; ? = 87.2°
C. 
= 99.37; ? = 93.7°
D. 
= 92.20; ? = 80°
Perform the indicated operation.[(1.3x3 + 7.4x2 + 4.7) + (6.5x - 2.3)] - (3.7x2 -x - 9.9)
A. 1.3x3 + 11.1x2 + 5.5x - 7.5 B. 12.5x6 + 12.3 C. 1.3x3 + 3.7x2 + 6.5x + 12.3 D. 1.3x3 + 3.7x2 + 7.5x + 12.3
Solve the problem.Salt Lake City, Utah, is due north of Flagstaff, Arizona. Find the distance between Salt Lake City (40°45' north latitude) and Flagstaff (35°16' north latitude). Assume that the radius of the Earth is 3960 miles. Round to nearest whole mile.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A plane flying a straight course observes a mountain at a bearing of 35.3° to the right of its course. At that time the plane is 
from the mountain. A short time later, the bearing to the mountain becomes 45.3°. How far is the plane from the mountain when the second bearing is taken (to the nearest tenth of a km)?
A. 5.7 km B. 8.6 km C. 3.8 km D. 9.5 km