Solve triangle ABC. If necessary, round the answer to the nearest tenth.A = 50.5°, B = 22.3°, a = 20.5 feet
A. C = 107.2°, b = 25.4 ft, c = 10.1 ft
B. C = 108.2°, b = 10.1 ft, c = 25.4 ft
C. C = 108.2°, b = 25.4 ft, c = 10.1 ft
D. C = 107.2°, b = 10.1 ft, c = 25.4 ft
Answer: D
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Find all numbers for which the rational expression is not defined.
A. y = 3
B. y = 3 and y = -3
C. y = 9
D. y = 
Solve the problem.The energy E (measured in joules) released by an earthquake of magnitude M on the Richter scale 
is given by the equation 
. Suppose an earthquake registers 7 on the Richter scale. Let I0 = 1. What is the intensity of the earthquake?
A. I = 1014.9 B. I = 107 C. I = 14.910 D. I = 710
Graph both equations using the same set of axes. Graph the equation on the left using a solid line and the function on the right with a dashed line. y = 4x, x = 4y 
A. 
B. 
C. 
D. 