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Test Bank For Mathematical Applications for the Management, Life, and Social Sciences 13e Ronald J. Harshbarger, James J. Reynolds Chapter 1-14 Answers are at the End of Each Chapter Chapter 1
Indicate whether the statement is true or false. 1. If a line is vertical, then its slope is undefined. a. True b. False 2. Determine whether the values in the table describe x as a function of y.
X Y
–7 –1
–1 0
0 1
3 5
4.2 10
9 11 14 11 35 29
18 22
22 60
a. True b. False
Indicate whether the answer to the question is yes or no. 3. The figure below is the graph of the demand function D, the supply function S, and the supply function after a
$30 tax T for the same product. Is it possible for the government to earn no money if it keeps increasing taxes on this product?
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a. Yes b. No 4. If
, is y a function of x? a. Yes b. No
5. The graph of
is shown in the figure below.
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Does the point (1,1) lie on the graph? In other words, do the coordinates satisfy the equation? a. Yes b. No 6. Let
. Is
?
a. Yes b. No 7. Graph the function below and experiment with the viewing window to obtain a complete graph, adjusting the
ranges where necessary. Does the figure below show the complete graph?
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a. Yes b. No 8. Graph the function below and experiment with the viewing window to obtain a complete graph, adjusting the
ranges where necessary. Does the figure below show the complete graph?
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a. Yes b. No 9. If 110 feet of fence is to be used to fence in a rectangular yard, then the resulting area of the fenced yard is
given by A = x(55-x), where x is the width of the rectangle. Is A a function of x? a. Yes b. No 10. Is the relation defined by the table a function of x?
x y
–1 0
0 2
5 4
3 6
5 9
a. Yes b. No 11. Suppose that a company’s revenue
is a function h of the number of customers C. Suppose also that the amount spent on advertising A affects the number of customers so that is a function f of A. The function is defined, since . Is defined? a. Yes b. No 12. The following table gives the number of drinks and the resulting blood alcohol percent for a 180-pound man
legally considered driving under the influence (DUI). Is the average rate of change of the blood alcohol percent Page 5