Decide whether the relation is a function.?
A. Function
B. Not a function
Answer: A
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Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r = 4 cos ?
A. 
x2 + (y - 2)2 = 4; circle, radius 2,
center at (0, 2) in rectangular coordinates
B. 
(x + 2)2 + y2 = 4; circle, radius 2,
center at (-2, 0) in rectangular coordinates
C. 
x2 + (y + 2)2 = 4; circle, radius 2,
center at (0, -2) in rectangular coordinates
D. 
(x - 2)2 + y2 = 4; circle, radius 2,
center at (2, 0) in rectangular coordinates
Add or subtract.(-3 + 4i) - 2
A. -1 - 4i B. -5 + 4i C. -1 + 4i D. 5 - 4i
Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Divide. Write the answer in lowest terms.
÷ 
A. 
B. 
C. 
D. 