Replace the Cartesian equation with an equivalent polar equation.x2 + y2 - 4x = 0
A. r sin2? = 4 cos ?
B. r cos2? = 4 sin ?
C. r = 4 sin ?
D. r = 4 cos ?
Answer: D
Mathematics
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A. {2} B. {12} C. {27} D. {3}
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A. 0.75 dl B. 750 dl C. 0.075 dl D. 75 dl
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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.ln 
A. 
ln x - ln y
B. ln 
- ln 
C. 
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D. 
ln x - 
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