Write sigma notation.0 + 2 + 6 + 12 + 20
A. 
B. 
C. 
D. 
Answer: B
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Identify the equation as a parabola, ellipse, or circle.x2 + y2 = 16
A. Circle B. Ellipse C. Parabola D. None of the above
Use the discriminant to find what type of solutions (two rational, two irrational, one rational, or two nonreal complex) each of the following equations has. Do not solve the equation.1 - 2x2 = -3x - 2
A. one rational solution B. two rational solutions C. two irrational solutions D. two nonreal complex solutions
Solve the problem.The population of a particular country was 28 million in 1980; in 1988, it was 40 million. The exponential growth function 
describes the population of this country t years after 1980. Use the fact that 8 years after 1980 the population increased by 12 million. Find k rounded to three decimal places.
A. 0.045 B. 0.878 C. 0.311 D. 0.055
Select the first five terms of the sequence. (Assume that n begins with 1.)
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A. 
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B.
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C.
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D.
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E.
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