Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
Answer: B
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Multiply.(3.1x - 8y)(2.6x + 5y)
A. 8.06x2 - 5.3xy - 40y2 B. 8.06x - 5.3xy - 40y C. 8.06x2 - 40y2 D. 8.06x2 - 36.3xy - 40y2
Solve the inequality. Graph the solution set and write it in interval notation.|2k + 2| ? 9
A. 
B. 
C. 
? 
D. 
Solve the problem. The following table shows the number of adults in a certain city who approve of the mayor's performance in various years. It also gives the total number of adults in the city in the same years. 
Let p be the percentage of adults in the city who approve of the mayor's performance in the year that is t years since 1980. A reasonable model of the situation is: p = 
Use this model to estimate when 29% of adults in the city will approve of the mayor's performance.
A. 2010 B. 2008 C. 2013 D. 2012
Identify the conic that the polar equation represents. Also, give the position of the directrix.r = 
A. ellipse, directrix perpendicular to the polar axis 1 right of the pole B. hyperbola, directrix perpendicular to the polar axis 1 right of the pole C. hyperbola, directrix perpendicular to the polar axis 1 left of the pole D. ellipse, directrix perpendicular to the polar axis 1 left of the pole