a.
To write a polynomial equation to find the year for the given music sales.
a.
Explanation of Solution
Given:
The music sales will be about
Calculation:
The given function for the problem is
The value of f(x) would be
Substitute this to the function to get a polynomial equation as follows-
b.
To list the possible whole number of solutions for the given equation in part (a).
b.
Explanation of Solution
The following is the equation −
The possible whole number solutions of
To find the year in which music sales will reach
Explanation of Solution
Given:
The music sales will reach
Calculation:
To know the year just subsitute any values from the possible ones in the following equation as follws-
The year that will reach the target sales will be somewhere 2013 and 2014 since
c.
To find whether the model represent a realistic estimate for all future music sales.
c.
Explanation of Solution
The model and function that can be used to estimate the music sales is not a realistic estimation for all future music sales. This is because as years go by, there are so many factors that could trigger the increase or decrease in sales. This is not accurate and could not be a basis for future estimation.
Chapter 5 Solutions
Glencoe Algebra 2 Student Edition C2014
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