
a.
To classify the polynomial.
a.

Answer to Problem 7MCQ
Trinomial
Explanation of Solution
Given:
The table shows the population density of Nevada for various years.
The population density of Nevada from 1930 to 2010 can be modelled by,
Concept used:
The polynomial can be classified with the number of terms in the expression:
Monomial − A polynomial with only one term
Binomial − A Polynomial with two terms
Trinomial − A polynomial with three terms
Using the above concept,
In the given equation, the number of terms is three resulting in a trinomial.
Conclusion:
The given expression is a trinomial.
b.
To determine the degree of the polynomial.
b.

Answer to Problem 7MCQ
Degree of the polynomial is 2.
Explanation of Solution
Given:
The table shows the population density of Nevada for various years.
The population density of Nevada from 1930 to 2010 can be modelled by,
Concept used:
Degree of the polynomial is the highest power of the terms in the polynomial.
In the given expression the term with highest power is 0. 005n2 . The highest power is 2.
Therefore, the degree of the polynomial is 2.
Conclusion:
The degree of the polynomial is 2.
c.
To predict the density of population in 2020 and 2030.
c.

Answer to Problem 7MCQ
In 2020, 28.72 people per square mile.
In 2030, 36.8 people per square mile.
Explanation of Solution
Given:
The table shows the population density of Nevada for various years.
The population density of Nevada from 1930 to 2010 can be modelled by,
Calculation:
The year 2020 is 90 years after 1930.
Let n = 90.
Substituting the value of t in
The year 2030 is 100 years after 1930.
Let n = 100.
Conclusion:
Therefore, the density of population in 2020 is 28.72 people per square mile and the density of population in 2030 is 36.8 people per square mile.
d.
To explain the mathematical practise used.
d.

Explanation of Solution
The mathematical practised used is substitution.
Substituting the known values to find the unknown value.
Chapter 8 Solutions
Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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