Evaluate the function 
at 
without using a calculator.
A. 
B. -3
C. -1
D. 25
E. -2
Answer: E
Mathematics
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Replace the Cartesian equation with an equivalent polar equation.x2 - y2 = 4
A. r cos 2? = 4 B. cos2? - sin2? = 4r C. cos2? - sin2? = 4 D. r2 cos 2? = 4
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Multiply and write the answer in lowest terms.
? 
A. 
B. 
C. 
D. 
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Match the equation with its graph.y = -3x
A. 
B. 
C. 
D. 
Mathematics
Decide whether the relation defines a function.y = 4x - 6
A. Function B. Not a function
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