Find an for the given geometric sequence.a2 = -10, r = -2
A. an = 5(-2)n - 1
B. an = -10(-2)n - 1
C. an = 5(-2n)
D. an = 5(-2)n
Answer: A
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Find the centroid of the region bounded by the given curves.The region bounded by the x-axis and the curve y = 5sin x, 0 ? x ? ?
A. 
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B. 
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C. 
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D. 
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To study the effect of fluoride in preventing tooth decay, researchers counted the number of fillings in the teeth of 28 patients and recorded these results:6, 7, 13, 21, 16, 22, 19, 8, 12, 3, 8, 2, 8, 16, 12, 19, 15, 10, 13, 9, 14, 15, 14, 14, 10, 10, 12, 12Create a table to tally the results.
A. Number of fillings Frequency 1-5 2 6-10 10 11-15 11 16-20 5 21-252 B. Number of fillings Frequency 1-5 4 6-10 9 11-15 12 16-20 4 21-25 2 C. Number of fillings Frequency 1-5 2 6-10 9 11-15 12 16-20 4 21-25 1 D. Number of fillings Frequency 1-5 4 6-10 10 11-15 12 16-20 5 21-25 3 E. Number of fillings Frequency 1-5 2 6-10 9 11-15 11 16-20 4 21-25 2
Graph the line through the given point with the given slope.(0, 2), m = 
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B. 
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Solve the problem.The total sales in dollars of some small businesses fluctuates according to the equation 
where x is the time in months, with x = 1 corresponding to January, 
and 
Determine the month with the greatest total sales and give the sales in that month.
A. June; $7700 B. December; $10,700 C. September; $4700 D. March; $10,700