Write the number in trigonometric form. Let 0 ? ? < 2?.7i
A. 7(cos 0 + i sin 0)
B. 7(cos 
+ i sin 
)
C. 7(cos ? + i sin ?)
D. 7(cos 
+ i sin 
)
Answer: B
Mathematics
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Perform the operation and simplify, or solve the equation for the variable.
? 
A. 
B. 
C. 
D. 
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A. 4 B. 6 C. 2 D. 3
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Find the distance between two points given their coordinates.Find the distance between points P and Q on a number line, with coordinates 5 and -12, respectively.
A. d(P, Q) = 7 B. d(P, Q) = -7 C. d(P, Q) = -17 D. d(P, Q) = 17
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Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.log3
A. 9 - log3x
B. 
C. - 3log3x
D. 3 - log3x
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