Prealgebra (7th Edition)
7th Edition
ISBN: 9780321955043
Author: Elayn Martin-Gay
Publisher: PEARSON
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Chapter C, Problem 22E
To determine
To write:
The number
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2. A microwave manufacturing firm has determined that their profit function is P(x)=-0.0014x+0.3x²+6x-355 , where is the number of microwaves sold annually. a. Graph the profit function using a calculator. b. Determine a reasonable viewing window for the function. c. Approximate all of the zeros of the function using the CALC menu of your calculator. d. What must be the range of microwaves sold in order for the firm to profit?
A clothing manufacturer's profitability
can be modeled by p (x)=-x4 + 40x² - 144, where .x
is the number of items sold in thousands and p (x) is
the company's profit in thousands of dollars.
a. Sketch the function on your calculator and describe the end behavior.
b. Determine the zeros of the function.
c. Between what two values should the company sell
in order to be profitable?
d. Explain why only two of the zeros are considered
in part c.
CCSS REASONING The number of subscribers
using pagers in the United States can be modeled by
f(x) = 0.015x4 -0.44x³ +3.46x² - 2.7x+9.68
where x is the number of years after 1990 and f(x) is
the number of subscribers in millions.
a. Graph the function.
b. Describe the end behavior of the graph.
c. What does the end behavior suggest about the
number of pager subscribers?
d. Will this trend continue indefinitely? Explain your
reasoning.
Chapter C Solutions
Prealgebra (7th Edition)
Ch. C - Write each number in scientific notation. a....Ch. C - Prob. 2PCh. C - Prob. 3PCh. C - Objective A Write each number in scientific...Ch. C - Objective A Write each number in scientific...Ch. C - Objective A Write each number in scientific...Ch. C - Objective A Write each number in scientific...Ch. C - Objective A Write each number in scientific...Ch. C - Objective A Write each number in scientific...Ch. C - Objective A Write each number in scientific...
Ch. C - Objective A Write each number in scientific...Ch. C - Prob. 9ECh. C - Objective A Write each number in scientific...Ch. C - Objective B Write each number in standard form....Ch. C - Objective B Write each number in standard form....Ch. C - Objective B Write each number in standard form....Ch. C - Objective B Write each number in standard form....Ch. C - Objective B Write each number in standard form....Ch. C - Prob. 16ECh. C - Objective B Write each number in standard form....Ch. C - Objective B Write each number in standard form....Ch. C - Prob. 19ECh. C - Prob. 20ECh. C - Prob. 21ECh. C - Prob. 22ECh. C - Prob. 23ECh. C - Prob. 24ECh. C - Objectives C Evaluate each expression using...Ch. C - Objectives C Evaluate each expression using...Ch. C - Objectives C Evaluate each expression using...Ch. C - Objectives C Evaluate each expression using...Ch. C - Objectives C Evaluate each expression using...Ch. C - Objectives C Evaluate each expression using...Ch. C - Objectives C Evaluate each expression using...Ch. C - Objectives C Evaluate each expression using...Ch. C - Objectives C Evaluate each expression using...Ch. C - Objectives C Evaluate each expression using...
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