The pictograph shows the number of bicyclists who participated in the Labor Day weekend bicycle race for the years indicated. 
What was the amount of increase in the number of cyclists from 2005 to 2006?
A. 65
B. 70
C. 60
D. 105
Answer: A
Mathematics
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Evaluate the improper integral.
A. 
B. 
C. 
D. 
Mathematics
A firm's weekly profit (in dollars) in marketing two products is given by
?
?
where 
and 
represent the numbers of units of each product sold weekly. Estimate the average weekly profit when 
varies between 40 and 50 units and 
varies between 45 and 50 units.
A. $12,300
B. $11,100
C. $13,400
D. $21,760
E. $16,450
Mathematics
Find f (2) .
Mathematics
Find the indicated sum.Find the sum of the first 40 terms of the arithmetic sequence: 18, 28, 38, 48, . . .
A. 8520 B. 8720 C. 418 D. 8529
Mathematics