Solve the problem.Find the value for x in the following special right triangle. Use exact values. 
4 in.
A. 16 in.
B. 2 in.
C. 4
in.
D. 4 in.
Answer: C
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Evaluate the square root. If the root is irrational then approximate the square root to the nearest hundredth.
A. 21.9 B. 2.19 C. 2.18 D. 2.2
Solve the problem.A bird flies from its nest 6 km in the direction 23° north of east, where it stops to rest on a tree. It then flies 9 km in the direction 30° south of west and lands atop a telephone pole. With an xy-coordinate system where the origin is the bird's nest, the x-axis points east, and the y-axis points north, at what point is the tree located?
A. (5.523, 2.344) B. (-3.197, -5.077) C. (2.344, 5.523) D. (0.9205, 0.3907)
Solve the problem.Let u = 6i + j, v = i + j, and w = i - j. Find scalars a and b such that u = av + bw.
A. 6v - w B. 3.500 v + 2.500w C. 6v + w D. 0.2857 v + 0.4000 w
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1