Determine whether the equation defines y as a function of x. x = y2
A. function
B. not a function
Answer: B
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Identify the form of the argument and state whether the argument is valid or invalid.If it is cold, then you need a coat.You do not need a coat. Therefore, it is not cold.
A. Fallacy of the inverse; invalid B. Law of syllogism; valid C. Law of contraposition; valid D. Fallacy of the converse; invalid
Evaluate the improper integral or state that it is divergent. 
A. 4 ln
B. 2
2
C. 4 ln 
D. 4 ln 2
Convert the radical expression to its rational exponent form and then simplify. Assume that all variables represent positive numbers.
A. x3/7y7/3 B. x3/7y3/7 C. x7/3y7/3 D. x7/3y3/7
Find the vertices of the ellipse.36(x + 3)2 + 25(y - 1)2 = 900
A. (3, 7), (3, -5)
B. (-2, 7), (-2, -5)
C. (-3, 1 - 
), (-3, 1 + 
)
D. (-3, 7), (-3, -5)