a.
Does the relation defined by the set of order pairs
a.
Answer to Problem 21AYU
It is not a function.
Explanation of Solution
Given information:
The marketing manager at Levi-Strauss wishes to find a function that relates the demand
Does the relation defined by the set of order pairs
Calculation:
Consider the table,
No, the relation defined by the set of order pairs
Because a function cannot have two values at same input, that is for every
Hence it is not a function.
b.
Draw a
b.
Answer to Problem 21AYU
Explanation of Solution
Given information:
The marketing manager at Levi-Strauss wishes to find a function that relates the demand
Draw a scatter diagram of the data.
Calculation:
A scatter diagram of the data of the data is,
Hence, the scatter plot is shown in graph.
c.
Use a graphing utility to find the line of best fit that models the relation between price quantity demanded.
c.
Answer to Problem 21AYU
Explanation of Solution
Given information:
The marketing manager at Levi-Strauss wishes to find a function that relates the demand
Use a graphing utility to find the line of best fit that models the relation between price quantity demanded.
Calculation:
Using a graphing utility to find the line of best fit that models the relation between price quantity demanded,
Hence, the line of best fit
d.
Interpret the slope.
d.
Answer to Problem 21AYU
Explanation of Solution
Given information:
The marketing manager at Levi-Strauss wishes to find a function that relates the demand
Interpret the slope.
Calculation:
Consider the line,
Hence, slope of line is
e.
Express the relationship found in part
e.
Answer to Problem 21AYU
Explanation of Solution
Given information:
The marketing manager at Levi-Strauss wishes to find a function that relates the demand
Express the relationship found in part
Calculation:
Hence, the relationship found in part
f.
What is the domain of the function?
f.
Answer to Problem 21AYU
Explanation of Solution
Given information:
The marketing manager at Levi-Strauss wishes to find a function that relates the demand
What is the domain of the function?
Calculation:
As we know that price cannot be negative, so the domain of the function will be from
Put
Hence domain of the function is
g.
How many jeans will be demanded if the price is
g.
Answer to Problem 21AYU
Explanation of Solution
Given information:
The marketing manager at Levi-Strauss wishes to find a function that relates the demand
How many jeans will be demanded if the price is
Calculation:
Jeans will be demanded if the price is
Hence, Jeans will be demanded are
Chapter 3 Solutions
Precalculus Enhanced with Graphing Utilities
Additional Math Textbook Solutions
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