Solve the inequality. Write the solution in interval notation.
< 3
A. (-4, 6)
B. 
C. (-?, 6) ? 
D. ?
Answer: C
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Simplify the rational expression. Assume that no variable has a value which results in a denominator with a value of zero.
A. x2 + 2
B. x2 + 8
C. 
D. 
Use a calculator to estimate the limit.
A. Does not exist
B. 3
C. 
D. 0
The demand function for a product is given by 
, where x is the number of units and p is the price in dollars. Graph this demand function for 
, with x on the horizontal axis.
?
A. ?
B. ?
C. ?
D. ?
E. ?
?A population of 10,000 is grouped as follows: 5,000 nonsmokers, 3,500 smokers of one pack or less per day, and 1,500 smokers of more than one pack per day. During any month there is a 5% probability that a nonsmoker will begin smoking a pack or less per day, and a 4% probability that a nonsmoker will begin smoking more than a pack per day. For smokers who smoke a pack or less per day, there is a 10% probability of quitting and a 10% probability of increasing to more than a pack per day. For smokers who smoke more than a pack per day, there is a 5% probability of quitting and a 20% probability of dropping to a pack or less per day. How many people will be in each of the three groups in 1 month?
A. ?The number of people in each group is as follows: 5,475 nonsmokers, 3,150 smokers of one pack or less per day, and 1,375 smokers of more than one pack per day. B. ?The number of people in each group is as follows: 4,975 nonsmokers, 3,350 smokers of one pack or less per day, and 1,675 smokers of more than one pack per day. C. ?The number of people in each group is as follows: 5,475 nonsmokers, 3,350 smokers of one pack or less per day, and 1,175 mokers of more than one pack per day.? D. ?The number of people in each group is as follows: 4,975 nonsmokers, 3,150 smokers of one pack or less per day, and 1,875 mokers of more than one pack per day. E. ?The number of people in each group is as follows: 4,775 nonsmokers, 1,875 smokers of one pack or less per day, and 3,350 smokers of more than one pack per day.