Write the complex number in trigonometric form, using degree measure for the argument.3
A. 3(cos 90° + i sin 90°)
B. 3(cos 0° + i sin 0°)
C. 3(cos 180° + i sin 180°)
D. 3(cos 270° + i sin 270°)
Answer: B
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Make a probability distribution for the given set of events.The following table displays a frequency distribution of the number of siblings for students at one middle school. Make a probability distribution for number of siblings.
A. 
B.
C. 
D. 
Solve the problem.Plot the point 
and find other polar coordinates (r, ?) of the point for which:(a) r > 0, -2? ? ? < 0(b) r < 0, 0 ? ? < 2?(c) r > 0 2? ? ? < 4? 
What will be an ideal response?
Solve by the method of your choice.(x + 8)(x - 3) = 2
A. {-5 ± 
}
B. {5 ± 
}
C. 
D. 
Convert as indicated.In a physics lab, Shelly recorded the speed of an object at 130 feet per second. Convert this speed to miles per hour. (Round to the nearest whole, if necessary.)
A. 1 mph
B. 468,000 mph
C. 89 mph
D. 
mph