Solve the problem.The average waiting time in a line before getting served is given by ?W = 
where A is the average rate that people arrive at the line and S is the average service time. At a certain bank, the average service time is 4 minutes. By sketching a graph of the equation on the interval 
answer the following questions. What happens to W when A is close to zero? Why does this make sense? What feature of your graph gives this information?
What will be an ideal response?
Answers will vary. Possible answer: As A approaches zero, the waiting time, W, becomes infinitely large. This information is given by the vertical asymptote, 
This makes sense because as the time between arrivals of customers gets smaller, the waiting time increases, becoming infinitely large for 
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Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.3 + 6 + 9 + . . . + 18
A. 
B. 
C. 
D. 
Find the smallest value of N that will make the inequality hold for all n > N.
< 10-2
A. 16 B. 15 C. 17 D. 18
The following figure shows a portion of the graph of a function f defined on the interval [-1,1]. Sketch the complete graph of f if it is known f is odd.
Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
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