Exam (elaborations)
Applied Calculus for the Managerial, Life, and Social Sciences 10th Edition by Soo T. Tan - Test Bank
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,1.1 - Precalculus Review I1.
a. True
b. False
ANSWER: False
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: True
DATE CREATED: 12/25/2015 9:33 AM
DATE MODIFIED: 12/25/2015 9:33 AM
2. Suppose a and b are real numbers other than zero and that . State whether the inequality is true or false.
a. True
b. False
ANSWER: False
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: True
DATE CREATED: 12/25/2015 9:33 AM
DATE MODIFIED: 12/25/2015 9:33 AM
3. Determine whether the statement below is true for all real numbers d.
a. True
b. False
ANSWER: False
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: True
DATE CREATED: 12/25/2015 9:33 AM
DATE MODIFIED: 12/28/2015 1:56 AM
4. If a < b, then a - c > b - c.
a. True
b. False
ANSWER: False
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: True
DATE CREATED: 12/25/2015 9:33 AM
Copyright Cengage Learning. Powered by Cognero. Page 1
,1.1 - Precalculus Review I
DATE MODIFIED: 12/25/2015 9:33 AM
5. A manufacturer of a certain commodity has estimated that her profit in thousands of dollars is given by the expression
where x (in thousands) is the number of units produced.
What production range will enable the manufacturer to realize a profit of at least $6,000 on the commodity?
a. Between 1,000 and 9,000 units.
b. Between 5,000 and 10,000 units.
c. Between 5,000 and 6,000 units.
d. Between 1,000 and 6,000 units.
e. Between 1,000 and 10,000 units.
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: True
DATE CREATED: 12/25/2015 9:33 AM
DATE MODIFIED: 12/25/2015 9:33 AM
6. Rationalize the numerator of the expression.
a.
b.
c.
d.
e.
ANSWER: c
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
DATE CREATED: 12/25/2015 9:33 AM
DATE MODIFIED: 12/25/2015 9:33 AM
Copyright Cengage Learning. Powered by Cognero. Page 2
, 1.1 - Precalculus Review I
7. Use the fact that to evaluate the expression without using a calculator.
a. 316,200
b. 316.2
c. 31.62
d. 31,620
e. 3,162,000
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: True
DATE CREATED: 12/25/2015 9:33 AM
DATE MODIFIED: 12/25/2015 9:33 AM
8. Simplify the expression. (Assume that r, s, and t are positive.)
a.
b.
c.
d.
e.
ANSWER: d
POINTS: 1
QUESTION TYPE: Multiple Choice
HAS VARIABLES: True
DATE CREATED: 12/25/2015 9:33 AM
DATE MODIFIED: 12/25/2015 9:33 AM
9. Evaluate the expression.
a. 8
b. –9
Copyright Cengage Learning. Powered by Cognero. Page 3
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