Solve for x. Assume that a and b represent positive real numbers.x2 = 4b
A. 
B. 
C. {2b, -2b}
D. 
Answer: D
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Use the graph to estimate the solution to f(x) = g(x).f(x) = 4 log (0.5x), g(x) = 1.2
A. x ? 4.5 B. x ? 4 C. x ? 1 D. x ? 1.2
Solve the right triangle using the information given. Round answers to two decimal places, if necessary. 
b = 2, B = 20°; Find a, c, and A.
A. a = 5.49 c = 6.84 A = 70° B. a = 5.49 c = 5.84 A = 80° C. a = 5.49 c = 5.84 A = 70° D. a = 5.49 c = 6.84 A = 80°
Perform the indicated operation. Write the result in standard form.(-4 + 6i) - 5
A. 1 - 6i B. 1 + 6i C. -9 + 6i D. 9 - 6i
Solve the problem.Two tracking stations are on the equator 129 miles apart. A weather balloon is located on a bearing of 
from the western station and on a bearing of N23°W from the eastern station. How far is the balloon from the western station? Round to the nearest mile.
A. 114 miles B. 143 miles C. 105 miles D. 134 miles