Concept explainers
(a)
To find: The average rate of change in spending from
(a)
Answer to Problem 38E
The average rate of change in spending from
Explanation of Solution
Given information:
Below table gives the amount of federal spending in billions of dollars for national defense for several years:
National Defense Spending | |
Year | National Defense Spending( |
Calculation:
The average rate of change in spending is the quotient of change in spending to the change in year.
The rate of change in spending from
Simplify the rate of change in spending from
Therefore, the average rate of change in spending from
(b)
To find: The average rate of change in spending from
(b)
Answer to Problem 38E
The average rate of change in spending from
Explanation of Solution
Given information:
Below table gives the amount of federal spending in billions of dollars for national defense for several years:
National Defense Spending | |
Year | National Defense Spending( |
Calculation:
The average rate of change in spending is the quotient of change in spending to the change in year.
The rate of change in spending from
Simplify the rate of change in spending from
Therefore, the average rate of change in spending from
(c)
To find: The average rate of change in spending from
(c)
Answer to Problem 38E
The average rate of change in spending from
Explanation of Solution
Given information:
Below table gives the amount of federal spending in billions of dollars for national defense for several years:
National Defense Spending | |
Year | National Defense Spending( |
Calculation:
The average rate of change in spending is the quotient of change in spending to the change in year.
The rate of change in spending from
Simplify the rate of change in spending from
Therefore, the average rate of change in spending from
(d)
To find: The reason for not prediction about the rate of change of national spending based on the data given.
(d)
Answer to Problem 38E
The average rate of change of national spending is not constant for all the years. So, the prediction can’t be done for the rate of change of national spending.
Explanation of Solution
Given information:
Below table gives the amount of federal spending in billions of dollars for national defense for several years:
National Defense Spending | |
Year | National Defense Spending( |
Calculation:
As calculated in the above parts of the question, the average rate of change of national spending in all the parts is not same.
So, the prediction is not useful for the rate of change of average rate of spending.
Therefore, the prediction can’t be done for the rate of change of national spending.
Chapter 2 Solutions
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